Question

36. A body of mass 0.5kg, initially at rest in acted upon by a force of 100N for 10s ... m/s. Calculate the acceleration caused by the force ) 250 4) 20 ... m/s. 1) 200 2) 300 37. From the above problem the velocity acquired by the body is 1) 200 %) 2000 3) 2500 4) 3000​

Answer 1

Answer:

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Answer 2

Explanation:

Given, mass of the body, m=5kg;

Initial velocity of the body, u=0;

Force acting on the body, F=20N;

Time for which the force acts, t=10s

If a is the acceleration produced in the body,

a= ffm

=20/5

=4m/s

2

Let v be the velocity of the body after 10 s.

Clearly, v=u+at=0+(4)×(10)=40m/s

Kinetic energy acquired by the body,

Ek=1/2 mv2

(5)×(40)

2

=4000J