Question

A car starting from rest and moving with uniform acceleration attain a speed of 60 km per hour in 5 minutes find its acceleration​

Answer 1

Initial speed, u=0.

Final speed, v=16 km/h =16×10003600=409 m/s.

Time, t=5 minutes =5×60=300 s.

v=u+at, where a is the acceleration.

⇒409=0+300a.

⇒a=409×300=4270 m/s2.

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Answer 2

u=0, v=60 km/h, t=5 min =5/60=1/12 hr

using v=u+at

60=1/12a

a=720 km/h^2