Motion is a change in
position over time
Dan sits in a moving car, As he looks out the window, another car is right next to his. When he looks again, the other car is still right next to his. Which of the following is true?
The other car is moving with the same speed as Dan's car
Jake walks 100m in 50 s, moving at different speeds. Dividing 100 m by 50 s gives you Jake's
speed in a specific direction
Sara walked north at 100 m/s. Han had a different velocity but the same speed. He could have walked
west at 100 m/s
Jess drives at a steady velocity. Her acceleration is
equal to zero
Acceleration measures a change in
On a velocity-time graph, a line that is slanted down from left to right shows
A push or pull is called
James combines all the forces acting on a tennis ball. He is finding the
Janet is sliding a box across the floor. What does she need to know to calculate the force on the box?
mass and acceleration
A soccer player kicks a ball that is at rest. What do you predict will happen?
Inertia is the resistance of an object to a change in its
According to Newton's second law of motion, force equals mass times
When you push on a door, the door pushes back with as equal and opposite force. These two forces are known as
action/reaction force pairs
The momentum of an object is the product of its
mass and velocity
A bowling ball rolls down the lane and hits some pins before rolling off the lane. What happens to the momentum of the ball as it hits the pins?
Some of the ball's momentum is transferred to the pins.
Conservation of momentum occurs only when there are
no outside forces