INV 3 test review NEWTONS LAWS

In this force diagram which arrow is representing friction?

• A

• B

• C

• D

What forces are acting upon a stationary object?

• gravity

• potential energy

• kinetic energy

• friction

What must be done to move a stationary object?

• apply a force

• a continental shift

• heat it

• cool it

How do we increase potential energy?

• by increasing the mass of an object

• by decreasing the mass of an object

• by decreasing the height the object is at

• by increasing the height the object is at

How do we increase kinetic energy?

• by increasing the mass

• by increasing the speed

• by decreasing the mass

• by decreasing the speed

how does friction affect motion?

• It slows down the object/resist motion

• It heps the object to glide/smoothly go over the surface

While playing hockey, player 1 is focues on the puck and speeding down the rink and doesn't see player 2 standing still on the ice. Player 1 collides with player 2.

Which of Newton's laws apply to this senario

• law 1

• law 2

• law 3

How do you know if this object is balanced?

• Its not balanced its net force is 10 N left and 4N up

• its not balanced its net force is 14n

• its impossible to tell, no solution

• It is balanced because its net force is 0 N

what force produces a chnage in motion

• gravitational force

• unbalanced force

• frictional force

• balanced force

Which has more inertia? (So need more force to move)

• ant

• truck

• a cat

• skatboard