Vocabulary
a push or a pull on an object
What is force?
kg or g
What are the units of mass?
When a force is exerted on an object, its _________ changes.
What is velocity?
F = mass x acceleration
What is Newton's 2nd law?
Newtons (N)
What is the unit for weight?
How fast an object is going
What is speed?
mm, cm, m, km
What are the units of distance?
When two objects collide, they both experience force, but from the opposite _______________.
What is direction?
An object at rest stays at rest until acted on by an unbalanced force.
What is Newton's 1st Law?
Two objects smashing into each other but then moving apart.
What is an elastic collision?
How fast an object is going in a certain direction.
What is velocity?
m/s or cm/s
What are the units of velocity?
An object moving across a rough surface experiences this force in the opposite direction to which it is moving.
What is friction?
The acceleration of an object depends on the mass of the object and the force acting on it.
What is Newton's 2nd Law?
The golf ball has a smaller change in velocity than the ping pong ball when the same force is applied to them.
What is an example of Newton's 2nd Law?
OR
What is the effect of mass on velocity?
A quality of an object in motion related to its mass and its velocity.
What is momentum?
kg m/s
What are the units of momentum?
When an object has a force exerted on it, the amount of change in velocity is dependent on the object's _______________.
For every action there is an equal and opposite reaction.
What is Newton's 3rd Law?
When the runner dropped the ball right over the target, the ball traveled beyond the target.
What is Newton's First Law? OR What is an example of Newton's First Law.
A force that is exerted by the Earth on all objects.
What is gravity?
m/s2
What are the units of acceleration?
Start, stop, slow down, speed up, change direction.
What are the 5 ways a force can change an object's velocity?
An object in motion stays in motion unless acted on by an unbalanced force.
What is Newton's First Law?
Two objects crashing into each other and sticking together.
What is an inelastic collision?