Question

An object of mass 100 kg is accelerated uniformly from a velocity of 5 m/s to 8 m/s in 6 s. Calculate the initial and final momentum of the object. Also find the magnitude of the force exerted on the object.​

Answer 1

Answer: initial momentum=500kg m/s

Final=800kg m/s

Force exerted=50N

Explanation:

Answer 2

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⏩ Here, m= 100 kg, u= 5 m/s, v= 8 m/s, t= 6 s.

→ Initial momentum, P1= mu

= 100 × 5 = 500 kg m/s . Ans.

→ Final momentum, P2= mv

= 100 × 8 = 800 kg m/s. Ans.

Now,

✷ The magnitude of the force exerted on the object,

F= P2-P1/t = 800-500/6 = 300/6 = 50 N. Ans.

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