Vocabulary
Force is a _ or a _ that can change the motion of an object.
push, pull
What causes a change in motion of an object?
A force exerted on that object.
What is a collision?
result, change.
What is velocity?
Velocity is how fast an object changes
What is mass?
The amount of matter that makes up an object.
A stronger force.
Why does an object in a collision have a different change in motion?
Different forces and/or different weights of the object can cause the objects in a collision to have a change in motion.
A cause is an event or process that _ to a result or change.
leads
What is the difference between speed and velocity?
Speed is the time of how fast the object moves, velocity is both the rate and direction of the object's motion.
Infer: to reach a conclusion using _ and _
evidence, reasoning
A force is required to _ the velocity of an object.
change.
How does a force cause a pod to move in the opposite direction?
A force that is strong enough can push the pod or slow it down. This can cause the pod to move in the opposite direction.
To infer is to _ a conclusion using _ and _
reach, evidence, reasoning.
What is the formula to calculate force?
F=ma
or Force = mass * acceleration
What is velocity?
Speed in a particular direction.
What does an object that changes velocity depend on?
The direction of the force exerted on that object.
How do forces affect motion?
Forces affect how objects move and cause motion as well.
Why is it important to understand cause and effect?
To help infer what led to a particular result.
What is Newton's third law?
For every action there is an equal and opposite reaction
Friction: a _ between a(n) _ and the _ it is moving over.
force, object, surface.
Would an object with greater or less mass have a greater change in velocity when exerted force (the same strength)?
Less mass
What is the difference between an object sliding across a a bumpy road and the object sliding across the bare floor?
An object sliding across a bare floor is a lot faster than on a bumpy road; a bare floor has less friction thus moving faster on a floor than the road.
What is the cause and effect of the pod situation, according to Claim 1?
Cause: The thrusters caused the pod to move in the opposite direction
Effect: The pod did not land in the space station, and went in the opposite direction.
What is one of Newton's first law?
Things at rest stay at rest
or Things in motion stay in motion unless acted upon by an outside force