A car starts from rest and goes down a slope with a constant acceleration of 5 m/s². After 5 seconds the car reaches the bottom of the hill. Its speed at the bottom of the hill, in meters per second, is: A) 1 B) 12.5 C) 25 D) 50 E) 160

Question

Quizplus · Accepted Answer

Using the equation, v = u + at, where u=0 (initial speed), a=5 (acceleration), and t=5 (time taken to reach the bottom of the hill), we get:

v = 0 + 5(5) = 25 m/s

Therefore, the speed of the car at the bottom of the hill is 25 m/s or Choice C.

A Car Starts from Rest and Goes Down a Slope