4. A racing car has a uniform acceleration of 4 m s - '2. What distance will it cover in 10 s after start?

200 m

Explanation:

Initial velocity - 0

final velocity = v

time = 10 seconds

to find final velocity

v = u + at

v = 0 + 4*10

v = 0 + 40

v = 40 m/s

to find distance

s = ut + 1/2at²

s = 0*10 + 1/2*4 * (10) ²

s = 1/2 * 4*100

s=200m

answer : 200 m