Vocab
what is velocity
the measure of speed in a particular direction.
also known as the law of inertia
Newtons 1st law of motion
solve
10N
5kg
10n/5kg
2ms2
pushing a sled is an example of what kind of friction?
sliding
What is acceleration
The rate at which velocity changes
Also known as the law of acceleration
Newton's second law
solve
5 ms2
8 kg
5ms2 X 8kg
40kg
Todd is trying to push a box across the floor. What type of friction is making it difficult to start moving the box.?
static
The force that resists the movement of one surface past another
Friction
Newtons 1st Law
an object at rest will stay at rest or if in motion will stay in motion unless acted on my external unbalanced forces.
solve
8 kg
6ms2
8kg X 6ms2
48N
a car driving on a freeway is what kind of friction
rolling
The tendency of an object to remain at rest or in constant motion unless a force acts on it.
Inertia
Newtons 2nd Law
An objects acceleration depends on the mass of the object and the size of the force applied.
solve
50N
10kg
50N/10kg
5ms2
If I drop a ball, what forces are in play?
Gravity pulls the ball down and then gravity is the force that causes the ball to stop bouncing.
Force
a push or a pull
Newtons 3rd law
If a force is applied to an object, the object will exert an equal force in the opposite direction.
solve
300 kg
5ms2
300kg X 5ms2
1500N
Daily Double:
If I kick a soccer ball, what forces are acting against it?
Gravity and the friction from the grass.