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Physics, A Level Ocr Spec a > Momentum > Flashcards

Flashcards in Momentum Deck (6)
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1
Q

What is Newton’s first law?

A

An object will remain at rest or move at a constant velocity unless acted upon by a net force

2
Q

What is Newton’s second law?

A

The rate of change of momentum of an object is directly proportional to the resultant force acting upon it and the change in momentum is in the same direction as the force.

(F=Δp/t)

3
Q

Elastic collision

A

Moment is conserved.
Energy is conserved
Kinetic energy is conserved

4
Q

Inelastic collision

A

Momentum is conserved
Total energy is conserved
Kinetic energy is not conserved

5
Q

What is impulse

A

The product of a force acting on an object and the length of time that it acts

6
Q

Newton’s 3rd law

A

Every action has an equal and opposite reaction