Question

A man throws a ball of mass 0.4 kg vertically upwards with a velocity of 10 m/s. What will be its initial momentum? What would be its momentum at the highest point of its reach?​

Answer 1

Answer:

p=mv

p=4 kg ms-1

by using the formula use multiply the mass in velocity we will get answer

Answer 2

Given:

✭ Mass of the ball is 0.4 kg

✭ Initial Velocity is 10 m/s

To Find

◈ Its initial momentum?

Solution

Concept

»» So we know that here when the ball is thrown up the velocity will be 10 m/s and so we shall simply substitute the values we in the formula we May get our initial momentum

»» For the final momentum, the final velocity will be zero(0) This is because when the body reaches the highest point then its velocity will be zero and if it had anything more then it should have reached much higher.

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So we know that momentum of a body is given by,

›› Momentum = Mass × Velocity

Then the initial momentum will be,

• Mass = 0.4 kg
• Initial velocity = 10 m/s

➝ Momentum = Mass × Initial Velocity

➝ Momentum = 0.4 × 10

➝ Initial Momentum = 4 kgm/s

Then the final momentum of the body will be,

➳ Momentum = Mass × Final Velocity

• Mass = 0.4 kg
• Final Velocity = 0 m/s

➳ Momentum = 0.4 × 0

➳ Final Momentum = 0 kgm/s

Therefore The Fm will be zero and the initial momentum will be 4 kgm/s

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