Question

force acts on an object of mass 4kg and changes its velocity from 36km/h to 72km/h. in 5 sec . find the magnitude of force
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Answer 1

Answer:

Mass(m) = 4kg

u= 10m/s. v= 20m/s. t= 5sec.

So, Acceleration(a) = (v-u)/t

a= (20-10)/5

a= 2m/s^2

So, Magnitude of Force(F)= m×a

F= 4×2

F= 8 Newton....

So, answer is 8 N.

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Explanation: