Question

a force acts on an object with 4kg and changes it's velocity 10 m/s to 20 m/s in 5 seconds find the magnitude of force.

Answer 1

force =mass multiply acceleration
p=ma
p = 4kg multiply (v-u/t) [v-u /t =a }
p=4kg multiply (20-10/5)
p = 4kg multiply (10/5)
p = 4kg multiply 2
p = 8N

Answer 2

Here is your answer...... ⤵⤵☺
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,
⚫, This question is based on Newtons 2nd law of motion.. ⤵⤵

A/q, To newton's 2nd law =) F = MASS × acceleration.

#, Mass = 4kg ( given) , and
we know acceleration is the rate of change of velocity = 20 - 10 / 5 = 2 m/s^2.

So, F = ma
#, F = 4 × 2
#,F = 8nwt. Ans☺⤴⤴

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