Suppose that a car traveling to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.

A) The car is decelerating, and its acceleration is positive.

B) The car is decelerating, and its acceleration is negative.

C) The acceleration is zero.

D) A statement cannot be made using the information given.

Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.

A) The car is decelerating, and its acceleration is positive.

B) The car is decelerating, and its acceleration is negative.

C) The acceleration is zero.

D) A statement cannot be made using the information given

**EXPERT ANSWER **

**Answer :**A) increases.

Suppose that a car traveling to the East (+x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.

A) The car is decelerating, and its acceleration is positive.

B) The car is decelerating, and its acceleration is negative.

C) The acceleration is zero.

D) A statement cannot be made using the information given.

**Answer :**B) The car is decelerating, and its acceleration is negative.

Suppose that a car traveling to the West (-x direction) begins to slow down as it approaches a traffic light. Make a statement concerning its acceleration.

A) The car is decelerating, and its acceleration is positive.

B) The car is decelerating, and its acceleration is negative.

C) The acceleration is zero.

D) A statement cannot be made using the information given

**Answer :**A) The car is decelerating, and its acceleration is positive.

**Answer : **C) a straight line making an angle with the time axis.