Question

A car is retraded by applying brakes at the rate of 2 metere per second square it is finally stopped in 10 seconds find its intial velocity​

Answer 1

Step-by-step explanation:

A= -2m/s2

t=10s

v=0m

u=?

from first equation of motion

v=u+at

0=u+(-2)10

0=u-20

u=20 m/s

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Answer 2

Answer:

a = 2m/s-²

v = 0

t = 10 second

a = v - u / t

2 = 0 - u / 10

20 = 0 - u

u = - 20