extra vocabulary
excert
applying force to an object.
what is force?
Force energy that moves another thing.
what is velocity?
the velocity of an object is the rate of it's change. Basically speed in a particualar direction.
what is energy?
energy is something that makes an object move.
what is friction?
a force between an ovject and the surface it moves over.
cause
an event or process that leads to a result or change.
what is the difference between force and velocity?
A force pushes or pulls on an object, but velocity is simply something an object has.
do you need force to change velocity of an object?
KEY CONCEPT: a force is required to change the velocity of an object.
how many types of energy did we learn about?
two, kinetic energy, potental energy.
what happens when friction is caused?
the object sliding moves slowly.
effect
a result or change that happens because of an event or process.
how can you apply force to something?
hit it with something that has force.
Does all moving objects have velocity?
yes, all moving objects have velocity.
what is potential energy?
it's stored energy.
can an object be stopped because of friction?
yes
infer
to reach a conclusion using evidence and reasoning.
what kind of force would apply greater change in velocity?
KEY CONCEPT: a stronger force can cause a greater change in velocity.
how do you change velocity?
KEY CONCEPT: how an object changes velocity depends on the direction of the force excerted on that object.
what is kinetic energy?
if there is no friction, what will happen to the object?
It will keep moving.
speed
the rate at which someone or something is able to move or operate.
how much force should you apply to change directions?
More than it already has.
what is the difference between speed and velocity?
Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.
how can energy be caused?
By something else that already has energy.
is there a range to friction?
Yes, you can have more friction or less friction. For example, a more bumpy surface has more friction.