an object of mass 5 kg is accelerated uniformly from a velocity of 4 metre per second to 8 metre per second in 8 second calculate the initial and final momentum of the object also find magnitude of force experiment on object
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Given :-
Mass of body = m = 5 Kg
Initial Velocity of body = u = 4 ms-¹
Final Velocity of body = v = 8 ms-¹
Time = t = 8 s
Product of Mass and Velocity is known as Momentum. It is denoted by P.
∆P = m∆v
∆P = m(v-u)
∆P = 5(8-4)
∆P = 20 Kg ms-¹
As we know that Rate per change in Momentum is known as Force.
F = ∆P/t
F = 20/8
F = 5/2 N
F = 2.5 N
Hence,
Change in Momentum of body = ∆P = 20 Kg ms-¹
Force = F = 2.5 N
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