A 1800 kg car is initially moving at 35 m/s After 3.8s the speed is 45...

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Question

Answer 1

Answer #1

Answer is B

by newton's first law of motion,

v = u + at

Here,

v= 45m/s

u= 35m/s

t= 3.8s

45 = 35 + 3.8a

a =10/3.8 m/s²

Force F = ma

F = 1800 * 10 /3.8

F= 4736.84N

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Answer 2

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