Question

Starting from rest, an object accelerates on a straight level surface at the rate of 2 m/s for 10 s. 9. What is the speed of the object at the end of 10 s? (A)5 m/s (B) 10 m/s (C) 20 m/s (D) 30 m/s (E) 40 m/s​

Answer 1

Answer:

C

Explanation:

a = v-u / t

a×t = v (u= 0 therefore is ignored)

2m/s² × 10s = v

v= 20m/s