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2 years ago

A force of 100N moves a body on a horizontal frictionless surface when......

Physics

1 answer:

zalisa [80]2 years ago

4 0

Answer:

I. Friction force exerted on the body is less than 100N

Explanation:

For a body to be static, the moving force must be equal to the frictional force. Since the frictional force is a force of opposition. It tends to oppose the moving force acting on an object.

Hence if the moving force is greater than the force of friction, the Force of fiction will not be able to overcome the moving hence the body will tend to move.

Therefore, for a body to move, Fm > Ff or Ff < Ff

Fm is the moving force

Ff is the force of friction

Given

Fm = 100N

For the 100N body to move the frictional force must be less than 100N

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Answer:

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3 years ago

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Answer:

a) 126 kgm/s

b) 0 kgm/s

c) 3.9 m/s

Explanation:

To solve this question, we will use the law of conservation of momentum.

Momentum before collision = momentum after collision

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m2 = mass of the box, 11 kg

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v2 = initial velocity of the box, 0 m/s

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Momentum of the box before collision

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P = mv

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Explanation:

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