Question

which will have more momentum, a body of mass 5kg having velocity 8m/s, or a body of mass 2kg having velocity of 20m/s
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Answer 1

Answer:

both have same momentum

Answer 2

Provided that:

★ Case number first:

• Mass of body = 5 kg
• Velocity = 8 m/s

★ Case number second:

• Mass = 2 kg
• Velocity = 20 m/s

To calculate:

→ Which will have more momentum, the body in case first or in case second!?

Solution:

→ Both have same momentum that is of 40 kilogram metre per second!

Using concept:

• Momentum formula

Using formula:

• ${\small{\underline{\boxed{\pmb{\sf{p \: = mv}}}}}}$

Where, p denotes momentum, m denotes mass and v denotes velocity.

Required solution:

★ Momentum in case first!

→ Momentum = Mass · Velocity

→ p = m · v

→ p = mv

→ p = 5(8)

→ p = 40 kg m/s

• Momentum = 40 kg m/s

★ Momentum in case second:

→ Momentum = Mass · Velocity

→ p = m · v

→ p = mv

→ p = 2(20)

→ p = 40 kg m/s

• Momentum′ = 40 kg m/s

Therefore, both have same momentum that is of 40 kilogram metre per second!