An object of mass 100 kg is accelerated uniformly from a velocity of 5 m s-1 to 8 m s-1 in 6 s. Calculate the initial and final momentum of the object. Also, find the magnitude of the force exerted on the object.
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Answer:
500 kgm/s, 800 kgm/s, 50N
Explanation:
The mass of the object is 100 kg .
It's accelerated uniformly from 5 m/s to 8 m/s in 6 s.
Initial momentum = Mass × Initial Velocity = 100 × 5 = 500 kgm/s
Final momentum = Mass × Final Velocity = 100 × 8 = 800 kgm/s
Magnitude of force = Change in momentum wrt time = Final momentum - Initial momentum/time = (800-500)/6 = 50N
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