Question

A car accelerates at a rate of 2.0 m/s^2. Assuming the car starts from rest, how much time does it need to reach a speed of 20. m/s?

Answer 1

10. s

Step-by-step explanation:

Given:

u = 0 m/s

v = 20. m/s

a = 2.0 m/s²

Find: t

v = at + u

20. m/s = (2.0 m/s²) t + 0 m/s

t = 10. s