Question

1. A body of mass 5 kg moving on a horizontal surface with a velocity of 10 ms comes to rest in 2 s.The force required to make this body move with a velocity of 10 ms-' on the same surface is
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Answer 1

Answer:

0 =10 + at = 10 + 2a

a = −5m/s2

F = ma = 5×5 = 25N

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Answer 2

Answer:

F=25N

Explanation:

0=10+at

=10+2a

a=-5m/s

F=ma

F=5*5=25N