Further Motion Concepts Flashcards

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1
Q

What is momentum?

A

The name given to the products of the mass and velocity of an object.

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2
Q

What do objects with a large momentum require to alter their motion?

A

A large force

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3
Q

What objects have momentum?

A

All moving objects

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4
Q

What happens when an object accelerates?

A

It changes its velocity from one value to another. This means that, when it accelerates it also changes its momentum.

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5
Q

What is the resultant force acting on an accelerating object equal to?

A

The rate of change of momentum of the object.

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6
Q

What happens during a collision in an isolate/closed system?

A

The total momentum of the objects remains constant (Momentum is conserved)

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7
Q

Momentum before = ?

A

Momentum After

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8
Q

What happens in an elastic collision?

A

Kinetic energy is conserved so kinetic energy before equals kinetic energy after. Momentum is conserved

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9
Q

What happens in an inelastic collision?

A

Kinetic energy is not conserved as energy is converted to other forms. Momentum is conserved.

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10
Q

What happens in an explosive collision?

A

Kinetic energy is not conserved but momentum is conserved.

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11
Q

What do you write out in equations of motion?

A

U
V
A
T
X

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12
Q

What is a turning force?

A

When a force acts at a distance away from the centre of a pivot, the force exerts a turning effect on the pivot called a turning force.

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13
Q

What is a moment?

A

The turning force that acts on the pivot.

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14
Q

Sum of clockwise moments = ?

A

Sum of anticlockwise moment

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