Force
Which has more friction, rubber, ice, or plexiglass?
rubber
Which vehicle will take more force to stop? A dumptruck or regular-sized car?
a dumptruck
The amount of matter in an object is called its...
mass
You push a chair across the floor. It gradually slows down and stops. Why did the chair stop moving?
friction from the floor
a result or change that happens because of an event or process
effect
What is required to change the velocity of an object?
force
What are the 5 ways an object can move?
Start, Stop, Speed Up, Slow Down, or Change Direction
A push or pull that can cause motion
force
You are playing pool. You hit the white ball and it hits a solid blue ball that is still. What happens to both balls after the collision?
The white ball will continue moving, stop, and/or change direction, and the blue ball will start moving.
How fast an object is moving
speed
To stop an object, the force must come from:
the opposite direction of the object's motion
It takes more force to slow down your bicycle by 5 mph than to speed it up 5 mph. True or False
False
A force between an object and the surface it is moving over
friction
A pod hits a space station. The space station is much more massive than the pod. The pod exerts a much stronger force than the station. True/False
False
Anything that has mass and takes up space
To speed up an object, the direction of force should be:
in the same direction of the object's motion
Speed with direction
Velocity
when 2 objects hit each other
collision
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/False
True
Explaining why a piece of evidence matters
reasoning
To start an object moving, the force must come from:
any direction
An object with less mass collides into an object with more mass. Which object will have the great change in velocity?
less mass
To apply a force
Exert
There is a collision between a bug and a dog. The bug experiences a greater change in velocity because...
it has a much smaller mass
To reach a conclusion using evidence and reasoning
Infer