Question

A car travelling initially at 20 m/s is accelerated to 40 m/s in 10 seconds. What is the acceleration of the car? How far does it travel during the 10s?

Answer 1

Answer:

acceleration=2m/s

distance=20000km

Explanation:

initial velocity (u)=20 m/s

Final velocity (v)=40m/s

Time = 10s

Acceleration of the car= change in velocity/time

A= v-u/t

A= 40-20/10

A= 2m/s

How far does it travel during 10sec=

s=ut+1/2×at^2

s=20×10+1/2×2×10×10

s=20000 km