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Shkiper50 [21]
3 years ago
5

A boy and his skateboard have a combined mass of 65 kg. What is the speed of the boy and skateboard if they have a momentum of 2

75 kg • ?
Physics
2 answers:
Salsk061 [2.6K]3 years ago
8 0
Speed (s) = momentum (M) : mass (m)

s = 275kg * m/sec : 65 kg ≈ 4,23 m/sec
erma4kov [3.2K]3 years ago
4 0

Answer : The velocity is given by 4.2 m/s.

Explanation :

It is given that,

Mass of a boy and the skateboard is, m = 65 kg

The momentum of the combined system is, p = 275 kg m/s

We know that the momentum of a body is the product of its mass and the velocity with which it is moving.

i.e.

p=m\times v

or

v=\dfrac{p}{m}

v=\dfrac{275\  kg m/s }{65\  kg}

v=4.2\ m/s

The speed of the boy and the skateboard is 4.2 m/s.

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