Question

the momentum of 75 g bullet is 9m/s. what is the velocity of the bullet?

Answer 1

Answer:

120m/s

Explanation:

Momentum, p = mv where m is mass and v is velocity

In this case, p = 9kg-m/s and m = 0.075kg

So 9 = 0.075v and v = 9/0.075 = 120m/s

The velocity of the bullet is 120m/s.

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Answer 2

Answer:

Velocity of the bullet = 120 m/s

Explanation:

We know that,

Momentum = Mass * Velocity

p = mv

Given that,

Momentum = p = 9 kg m/s = 9000 g m/s

Mass = m = 75g

Therefore putting all the values in,

9000 = 75 * v

v = 9000/75 = 120 m/s

v = 120 m/s