Question

find the initial velocity of a car which is stopped in 10s by applaying brakes the retardation due to brakes is -2.5m /s2

Answer 1

Answer:

On applying brakes we get the final velocity of the car to be zero.

Also we are given that retardation of the car is -2.5 m/s² and the time at which it stops is 10 seconds.

Applying First Equation of Motion we get,

→ v = u + at

→ 0 = u - 2.5 × 10

→ 0 = u - 25

→ 0 + 25 = u

→ u = 25 m/s

Therefore Initial Velocity of the car (u) is 25 m/s

Answer 2

Answer:

see the attachment please

Explanation:

here is your answer

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