Question

Find the initial velocity of a car with stopped in 10 seconds by applying brakes retardation due to breaks is 2.5 M per second square
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Answer 1

Hi pupil here's your answer ::

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✔Please see the attached answer ✔

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Answer 2

here ,
v= 0m/s
t= 10 sec
a=2.5m/square
u.=?
a= v- u divided by t a

therefore, u= v- at
u=o- 2.5× 10
u= - 25
therefore initial velocity= - 25 m/s