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Sergeu [11.5K]
3 years ago
5

A 1200-kg car moving at 20 km/h is accelerated

Engineering
1 answer:
Grace [21]3 years ago
4 0

Answer:

Force on the car will be 4800 N and time required to cover this distance 13.75  sec

Explanation:

We have given mass of the car = 1200 kg

Initial velocity u = 20 km/h

Final velocity v = 75 km/h

Acceleration a=4m/sec^2

From the first equation of motion we know that

v = u+at, here v is final velocity, u is initial velocity, a is acceleration and t is time

So 75=20+4\times t

t = 13.75 sec

From second law of motion we know that F=ma

So force F=1200\times 4=4800N

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