Newton's Laws & Collisions Flashcards
1
Q
Newton’s 1st Law
A
An object will remain at rest or keep travelling at a constant velocity unless it is acted on by an external force.
2
Q
Newton’s 2nd Law
A
The net force acting on an object is equal to the rate of change of momentum. The net force and change in momentum act in the same direction.
3
Q
Newton’s 3rd Law
A
When two bodies interact, they exert an equal and opposite force on each other.
4
Q
4 Conditions of forces in Newton’s 3rd Law:
A
Act on different bodies
Same type of force
Opposite in direction
Equal in magnitude
5
Q
Define a perfectly elastic collision
A
KINETIC Energy (and momentum) are conserved
