Question

A person is initially driving a car east down a straight road. The magnitude of the instantaneous acceleration is decreasing with time, but the direction of the acceleration is always to the east. The speed of the car is ________.
a. increasing but then decreasing.
b. constant.
c. decreasing.
d. decreasing but then increasing.
e. increasing.

Answer 1

Answer:

C. Decreasing

Explanation:

The instantaneous acceleration decrease with time imply that the velocity at every instant of time decreases and what this means is that the final velocity is less than the initial velocity then, acceleration will decrease.

a= V-U/t

Since the final velocity is less than the initial velocity then the acceleration will decrease...