Move it!
What word means speed in a specific direction?
Velocity
What is stored energy called?
Potential energy
What force pulls an object towards Earth?
Gravity
Momentum depends on mass and what else?
Velocity/speed
A ball is rolling very fast east. What word can describe this?
Velocity.
A rollar coaster at the top of the hill has mostly what type of energy?
According to Newton's 3rd law, every action force has what?
An equal and opposite reaction force?
What is a projectile?
A projectile is any object that is thrown, shot, or launched into the air.
What is the difference between speed and velocity?
Speed has no direction, velocity measures how fast something is going in a certain direction.
A skateboarder is skating down a ramp. Their potential energy changes into...
Kinetic energy
A bird pushes air downward with its wings. What happens in return?
The air pushes the bird upward.
Which has more momentum a fast bicycle or a slow bicycle with the same mass?
The fast bicycle
If two rocks crash into each other, what word can describe this?
Collision
When does a roller coaster have the most kinetic energy? Top, middle, or bottom?
The bottom.
When you jump off a boat why does the boat move backwards?
Why does a heavier moving object usually have more momentum?
Because it has more mass
Two cars drive different directions, one east, one south. Do they have the same velocity? Why?
They have different velocities, because they are moving in different directions.
A rock is dropped from a cliff. What happens to its potential and kinetic energy as it falls?
Potential energy decreases while potential energy increases.
A mosquito hits a truck. Does the truck push back with more force, less force, or the same force?
Same force.
Stanley is thrown in the air directly upward. At the highest point before he falls, what is his velocity?
0.