Newton's 3rd Law
What happens when one object exerts a force on a second object?
The second object exerts a force of the same size but in the opposite direction.
A ____________ is a force that pushes perpendicular to an object's surface
normal force
What determines the direction a tennis ball goes when it is hit with a racket?
The angle of the normal force from the racket.
What occurs when you push against a wall while on skates?
You move away from the wall
In a collision, how does the second object accelerate?
In the direction of the force applied
What happens when a gymnast pushes against the floor?
Does just the floor experience a force? Does just the gymnast experience a force?
The floor and gymnast experience equal and opposite forces.
A _________________ is the forces two objects apply to each other
force pair
When playing billiards (pool), when the cue ball hits another ball, what happens to each ball?
The cue ball's velocity decreases and the other ball starts moving.
A ___________________ force is when forces push forming a 90 degree angle
perpendicular
Why don't force pairs cancel out?
Because each force acts on a different object.
_______________ collision is When objects bounce off each other
elastic collision
In an elastic collision, what happens to the objects?
they bounce off of each other
Why do you move away from a wall if you push it while on a skateboard?
The wall creates an equal and opposite reaction force
What type of collision occurs when objects stick together?
Inelastic collision
When turning a tennis ball, what must a player do?
Turn the racket to change the normal force direction