Vocab
Energy
the ability to make thins move or change
Does something that is moving have energy?
yes
A force is required to __________ of an object.
Change the velocity
Cause and effect
An event or reaction and it's result or change.
Velocity
an object's mass and speed in a certain direction.
A car accelerates to 2x its previous speed. What does it's velocity do?
It increases by 4.
How an object changes ________ depends on the _______ exerted on that object.
Velocity;direction of force
How many ways are there that an object can change direction?
5
Exert
To apply force
When a force is exerted on something, it does one of 5 things:
Name at least 3.
start moving
speed up
change direction
slow down
stop
A ________ force can cause a greater change in velocity.
Greater
Does a surfer surfing a wave have energy?
yes.
Friction
A force that is applied in the opposite direction of the direction the object is moving.
Friction is applied in the ________ direction of the object's velocity.
opposite
Understanding ________ and ________ relationship can help you ________what led to a particular result.
Cause; effect; infer
Does an airplane that is not moving but has fuel in it have energy?
yes.
Collision
When two objects collide.
In a collision, ___________ of force are applied to both objects.
Equal amounts
If the same force is exerted on objects with different masses . . .
The object with a greater mass will have a lesser change in velocity;
the object with a lesser mass will have a greater change in velocity.
Is air resistance a type of friction?
yes, it is.