good morning sir,my question follows,

Asked by  | 19th May, 2008, 06:58: PM

Expert Answer:

Initial speed, u =20 km/h; final speed, v = 40 km/h. Convert the units is m/s. Also time, t = 4s.

1. Acceleration, a = (v-u)/t

2. Use third equation of motion  to calculate the distance, s.

Rgds

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Answered by  | 20th May, 2008, 01:17: PM

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