Question

Find the initial velocity of a car which is stopped in 10 seconds by applying brake the retardation is 2.5 metre per second square
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Answer 1

Answer:

here we apply formula

Explanation:

V=u +at. 0=u+2.5*10=25m/s. so u =25m/s.

Answer 2

$\huge\mathbb\pink{Answer}$

initial velocity=?

final velocity=0

time=10

accelaration=-2.5m/s2

a=v-u/t

• -2.5=0-u/10

• -2.5=-u/10

• -2.5*10=-u

• -25=-u

• 25=u