Force
Motion
Vocabulary
Examples
Newton's Laws of Motion
100
What is needed to change the velocity of an object?
A force
100
What are 5 ways an object can move?
Start moving, speed up, slow down, stop, and change direction
100
What word describes speed with direction?
Velocity
100
You push a chair across the floor. It gradually slows down and stops. Why did the chair stop moving?
Friction
100
Gail and Jared set up an experiment that they read about in their science notebook, which used a glass, several coins (penny, nickel, and quarter) and an index card. The students flicked the card from under each of the coins to see what would happen. When they flicked the card from under each of the coins, the coins went into the jar. Which law of motion best supports this experiment?
Newton's Third Law
200
What direction does the force need to be to stop an object?
The force must be applied in the opposite direction
200
It takes more force to slow down your bicycle by 5 mph than to speed it up 5 mph. True or False
false
200
This experiment indicated that an object at rest will remain at rest and will resist being put into motion. What term(s) best expresses what this experiment demonstrated?
A. difference in mass
B. )inertia
C.) acceleration
D.) difference in forces
Inertia
200
You are playing pool. You hit the white ball and it hits a solid color ball that is still. What happens to both objects after the collision?
The white ball will stop and the other ball will start moving.
200
If applying the same amount of force to a sedan and a truck, the sedan would have the greater change in velocity. Which law of motion best supports this statement?
Newton's 2nd Law
300
To speed up an object, the direction of the force should be:
in the same direction
300
An object with less mass collides into an object with more mass. Which object will have the greatest change in velocity?
Less mass
300
A push or pull that causes motion.
Force
300
A pod hits a space station. The space station is much more massive than the pod. The pod experiences a much stronger force than the station. True/False
False
300
An object in motion will stay in motion and an object are result will stay at rest unless acted upon by an unbalanced force. Which law of motion represents this statement.
Newton's First Law
400
To start an object moving, the force must come from:
any direction
400
Two objects with different masses are moving at the same velocity. Which statement correctly explains how inertia affects these objects?
A) The object with less mass has more inertia and is harder to stop.
B) The object with more mass has more inertia and is harder to stop.
C) Both objects have the same inertia because their velocities are equal.
D) Neither object has inertia because they are in motion.
B) The object with more mass has more inertia and is harder to stop.
400
The force that slows down motion between touching objects.
Friction
400
There is a collision between a bug and a car. The bug experiences a greater change in velocity because...
smaller mass
400
A 40 kg person is pushing a shopping cart with a constant acceleration of 4 m/s² in a supermarket. What is the net force exerted by the person on the shopping cart?
160 N
500
In a game of softball, the pitcher throws a ball toward the batter. If the batter swings and makes contact with the ball, a force is applied from the bat to the ball. What is the purpose of this force?
The force changes the direction of the ball.
500
The following table shows the speed of a car at different times during a 10-minute trip :Based on the table, which of the following statements are correct?
A.) The car reached its maximum speed of 8 m/s at minute 4 and then slowed down.
B.) The car was accelerating at a constant rate throughout the trip.
C.) The car maintained a constant speed of 8 m/s for the entire trip.
D.) The car was stationary for the first 4 minutes, then moved at a constant speed for the rest of the trip.
A.) The car reached its maximum speed of 8 m/s at minute 4 and then slowed down.
500
When 2 objects hit into each other.
Collision
500
A pod hits a space station. The space station is much more massive than the pod. The pod experiences a much greater change in velocity. True or False
True
500
At dinner, Hans passed the salt shaker to his sister Jessica by sliding it across the wooden table. The salt shaker gradually slowed down and stopped after moving 12 centimeters. Why did the salt shaker stop moving?
A.) The salt shaker ran out of force.
B.) The table exerts a force that is opposite to the salt shaker’s motion.
C.) The table absorbs force from the salt shaker.
D.) All objects stop moving because their natural state is to be still.
B.) The table exerts a force that is opposite to the salt shaker’s motion.