A car moves with an initial velocity of 25ms−¹ and reaches a velocity of 45ms−¹ in 10s. What is the acceleration of the car?

A. 2 ms^-2
B. 5 ms^-2
C. 20 ms^-2
D. 25 ms^-2

Correct Answer:

Option A = 2 ms^-2

Explanation

Acceleration = (increase in velocity)/time taken
= (45 – 25)/10 = (20)/10 = 2 ms^-2