Physics

The slope of a line connecting two points on a velocity versus time graph givesA) displacement.B) instantaneous velocity.C) average velocity.D) instantaneous acceleration.E) average acceleration. The slope of a tangent line at a given time value on a velocity versus time graph givesA) displacement.B) instantaneous velocity.C) average velocity.D) instantaneous acceleration.E) average acceleration. Suppose that an object …

The slope of a line connecting two points on a velocity versus time graph gives A) displacement. B) instantaneous velocity. C) average velocity. D) instantaneous acceleration. E) average acceleration.The slope of a tangent line at a given time value on a velocity versus time graph gives A) displacement. B) instantaneous velocity. C) average velocity. D) instantaneous acceleration. E) average acceleration.Suppose that an object is moving with constant acceleration. Which of the following is an accurate statement concerning its motion? A) In equal times its speed changes by equal amounts. B) In equal times its velocity changes by equal amounts. C) In equal times it moves equal distances. D) The object is not moving; it is at rest. E) A statement cannot be made without additional information.During the time that the acceleration of a particle is constant, its velocity-vs.-time curve is A) a straight line. B) a parabola opening downward. C) a parabola opening upward. D) a parabola opening toward the left. E) a parabola opening toward the right. Read More »

When is the average velocity of an object equal to the instantaneous velocity?A) alwaysB) neverC) only when the velocity is constantD) only when the velocity is increasing at a constant rateE) only when the velocity is decreasing at a constant rate Which statement is correct about the relationship between the instantaneous speed and the magnitude …

When is the average velocity of an object equal to the instantaneous velocity? A) always B) never C) only when the velocity is constant D) only when the velocity is increasing at a constant rate E) only when the velocity is decreasing at a constant rate.Which statement is correct about the relationship between the instantaneous speed and the magnitude of the instantaneous velocity? A) The average speed can be less than, greater than or equal to the magnitude of the average velocity. B) The instantaneous speed is always equal to the magnitude of the instantaneous velocity. C) The average speed is always less than or equal to the magnitude of the average velocity. D) The instantaneous speed is always greater than or equal to the magnitude of the instantaneous velocity. E) The average speed is always one-half the magnitude of the average velocity.Suppose that an object is moving with a constant velocity. Make a statement concerning its acceleration. A) The acceleration must be constantly increasing. B) The acceleration must be constantly decreasing. C) The acceleration must be a constant non-zero value. D) The acceleration must be equal to zero. E) A statement cannot be made without additional information.At a given instant, the acceleration of a certain particle is zero. This means that A) the velocity is constant. B) the velocity is increasing. C) the velocity is decreasing. D) the velocity is not changing at that instant. E) the velocity is zero. Read More »

You drive 6.00 km at 50.0 km/h and then another 6.00 km at 90.0 km/h. Your average speed over the 12.0 km drive will beA) greater than 70.0 km/h.B) equal to 70.0 km/h.C) less than 70.0 km/h.D) exactly 38.0 km/h.E) cannot be determined from the information given, must also know directions traveled The slope of …

You drive 6.00 km at 50.0 km/h and then another 6.00 km at 90.0 km/h. Your average speed over the 12.0 km drive will be A) greater than 70.0 km/h. B) equal to 70.0 km/h. C) less than 70.0 km/h. D) exactly 38.0 km/h. E) cannot be determined from the information given, must also know directions traveled.The slope of a line connecting two points on a position versus time graph gives A) displacement. B) instantaneous velocity. C) average velocity. D) instantaneous acceleration. E) average acceleration.Which statement is correct about the relationship between the average speed and the magnitude of the average velocity for any motion? A) The average speed is always one-half the magnitude of the average velocity. B) The average speed is always greater than or equal to the magnitude of the average velocity. C) The average speed can be less than, greater than or equal to the magnitude of the average velocity. D) The average speed is always less than or equal to the magnitude of the average velocity. E) The average speed is always equal to the magnitude of the average velocity.The slope of a tangent line at a given time value on a position versus time graph gives A) displacement. B) instantaneous velocity. C) average velocity. D) instantaneous acceleration. E) average acceleration Read More »

A scalar quantity is defined asA) a quantity that is specified by a numerical value only.B) a quantity that is specified by using both a numerical value and a direction. A vector quantity is defined asA) a quantity that is specified by a numerical value only.B) a quantity that is specified by using both a …

A scalar quantity is defined as A) a quantity that is specified by a numerical value only. B) a quantity that is specified by using both a numerical value and a direction.A vector quantity is defined as A) a quantity that is specified by a numerical value only. B) a quantity that is specified by using both a numerical value and a direction.Suppose that an object travels from one point in space to another. Make a comparison between the displacement and the distance traveled. A) The displacement is either greater than or equal to the distance traveled. B) The displacement is always equal to the distance traveled. C) The displacement is either less than or equal to the distance traveled. D) The displacement can be either greater than, smaller than, or equal to the distance traveled. E) If the displacement is equal to zero, then the distance traveled will also equal zero.Which statement below about the distance between the starting and ending positions and the displacement between the starting and ending positions is correct? A) The distance between the starting and ending positions is twice the magnitude of the displacement between the starting and ending positions. B) The distance between the starting and ending positions is equal to the magnitude of the displacement between the starting and ending positions. C) The distance between the starting and ending positions is the negative of the magnitude of the displacement between the starting and ending positions. D) The distance between the starting and ending positions is greater than the magnitude of the displacement between the starting and ending positions. E) The distance between the starting and ending positions is less than the magnitude of the displacement between the starting and ending positions. Read More »

A ball is thrown straight up with some initial speed, when it reaches the top of its flight (at height h), a second ball is thrown upward with the same initial speed. Where will the balls cross paths?A.) Below halfway pointB.) At halfway pointC.) Above halfway point A mass (m) is placed on an inclined …

A ball is thrown straight up with some initial speed, when it reaches the top of its flight (at height h), a second ball is thrown upward with the same initial speed. Where will the balls cross paths? A.) Below halfway point B.) At halfway point C.) Above halfway point.A mass (m) is placed on an inclined plane and slides down the plane at constant speed. If similar block with 2m was placed on same incline, it would: A.) Slide down at constant speed B.) Slide down at constant velocity C.) Slide down with a constant acceleration.In the game of tetherball, the struck ball whirls around a pole. In what direction does net force on the ball point? A.) Along the vertical component of the tension B.) Along the horizontal component of the tension force C.) Along the hypotenuse of the tension force Read More »

When throwing a ball straight up, which is true about its velocity and its acceleration at its highest point?A.) Velocity = 0 Acceleration ≠ 0B.) Velocity ≠ 0 Acceleration = 0C.) Velocity = 0 Acceleration = 0 You throw a ball straight up into the air. At what point does it have max acceleration?A.) At …

When throwing a ball straight up, which is true about its velocity and its acceleration at its highest point? A.) Velocity = 0 Acceleration ≠ 0 B.) Velocity ≠ 0 Acceleration = 0 C.) Velocity = 0 Acceleration = 0.You throw a ball straight up into the air. At what point does it have max acceleration? A.) At its highest point B.) At the midpoint C.) Acceleration is constant throughout.You throw a ball up with a Velocity Initial of 10 m/s, assuming no air resistance, what is the speed when it comes back down? A.) 0 m/s B.) 10 m/s in same direction C.) 10 m/s in opposite direction.Julie and Andrew each throw a ball up with the same initial velocity, Julie throws the ball up and Andrew throws the ball down. What is the relationship of Julie’s ball’s velocity and Andrew’s ball’s velocity when their hit the ground? A.) Julie’s Velocity = Andrew’s Velocity B.) Julie’s Velocity > Andrew’s Velocity C.) Julie’s Velocity < Andrew's Velocity Read More »

Does the displacement of an object depend on the specific location of the origin of the coordinate system?A.) NoB.) YesC.) The answer can not be determined based on give information If position is 0, does speed have to be 0 as well?A.) NoB.) YesC.) The answer can not be determined based on give information What …

Does the displacement of an object depend on the specific location of the origin of the coordinate system? A.) No B.) Yes C.) The answer can not be determined based on give information.If position is 0, does speed have to be 0 as well? A.) No B.) Yes C.) The answer can not be determined based on give information.What does an odometer in a car measure? A.) Speed B.) Displacement C.) Distance.You drive for 30 minutes at 30 mi/hr, and 30 minutes at 50 mi/hr, what is your average speed? A.) 30 mi/hr B.) 40 mi/hr C.) 50 mi/hr.You drive four miles at 30 mi/hr & four miles @ 50 mi/hr. What is the average speed? A.) Less than 40 mi/hr B.) 40 mi/hr C.) More than 40 mi/hr.If average velocity is non-zero over some time interval, does this mean that instantaneous velocity is never zero during same interval? A.) Can not be determined based on given information B.) Yes C.) No Read More »

Given that A + B = 0 and that |A| + |B| = |C|, how are vectors A & B oriented in respect to each other.A.) They are perpendicular and in the same directionB.) They are parallel and in the same directionC.) They are parallel and in different directions If components of vector are doubled, …

Given that A + B = 0 and that |A| + |B| = |C|, how are vectors A & B oriented in respect to each other. A.) They are perpendicular and in the same direction B.) They are parallel and in the same direction C.) They are parallel and in different directions.If components of vector are doubled, what happens to the vector? A.) It does not change B.) The vector is doubled C.) The vector is split in two.A vector has x & y components that are equal in magnitude. Which of the following is a possible angle? A.) 90 B.) 180 C.) 45.You and your dog go for a walk. Your dog goes off the path multiple times, chasing squirrels or trying to run towards another dog. Do you and your dog have the same displacement? A.) No B.) Yes C.) The answer can not be determined based on give information Read More »

Given that A + B = C and |A|² + |B|² = |C|² how are vectors A and B oriented with respect to each other?A.) They are parallel to each otherB.) They are not related to each other at allC.) They are perpendicular to each other Two vectors are given so that Vector A + …

In this problem: “You have two balls and from the same height (and same time), one ball (Ball #1) is dropped and another (Ball #2) is fired horizontally. which ball hit the ground first?” Which ball has greater final velocity at ground level? A.) Ball #1 B.) Ball #2 C.) They have the same final velocity.A projectile is launched from ground at 30 degrees. At what point in trajectory does projectile have least speed? A.) The highest point B.) The midpoint C.) The lowest point.Two vectors are given so that Vector A + Vector B = 0, describe magnitude and direction. A.) Different Magnitude, Different Directions B.) Same Magnitude, Different Directions C.) Same Magnitude, Same Directions. Given that A + B = C and |A|² + |B|² = |C|² how are vectors A and B oriented with respect to each other? A.) They are parallel to each other B.) They are not related to each other at all C.) They are perpendicular to each other. Read More »

A cart rolls down inclined track and is accelerating. It fires a ball straight out of the cannon as it moves. What happens to the ball?A.) It falls in front of the cartB.) It falls right back into the cartC.) It falls behind the cart You drop a package from a plane flying at constant …

A cart rolls down inclined track and is accelerating. It fires a ball straight out of the cannon as it moves. What happens to the ball? A.) It falls in front of the cart B.) It falls right back into the cart C.) It falls behind the cart. You drop a package from a plane flying at constant speed in a straight line. Without air resistance, what will the package do? A.) Remain vertically behind the plane B.) Remain vertically in front on the plane C.) Remain vertically under plane while falling.You have two balls and from the same height (and same time), one ball (Ball #1) is dropped and another (Ball #2) is fired horizontally. which ball hit the ground first? A.) They hit the ground at the same time B.) Ball #1 C.) Ball #2 Read More »