Which has more friction, rubber, ice, or plexiglass?
rubber
Will a more mass object or less massive object take more force to stop?
More massive object
when 2 objects hit each other
collision
You push a chair across the floor. It gradually slows down and stops. Why did the chair stop moving?
friction from the floor
What is a controlled variable?
ALL things that stay the same throughout the experiment.
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
A tennis ball hits the ground at 50mph, then again at 20 mph. When did the ground experience more force during the collision?
When the ball hit the ground at 50 mph.
Would you weigh more or less on Mars?
Less
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
The force that slows down motion between touching objects.
friction
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
What is the largest bone in the human body?
To speed up an object, the direction of force should be:
in the same direction of the object's motion
Speed with direction
Velocity
The amount of matter in an object is called its...
mass
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
What are the states of matter?
Solid, Liquid, and Gas. (and Plasma)
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 car. The bug experiences a greater change in velocity because...
it has a much smaller mass
Which is the largest planet?
Jupiter.