Definition
Definition 2
Definition 3
Practice Problems
Practice Problems 2
100
The tendency of an object to resist a change in its motion is called _______.
inertia
100
________ motion is any motion in which an object is moving along a curved path.
circular
100
_________ is a measure of how hard it is to stop a moving object.
Momentum
100
What is the net force?
40 N
100
It takes _______ force to move a larger/more massive object.
more
200
Forces acting on an object that combine and form a net force of zero are _________.
balanced
200
Newton’s ________ law- the acceleration of an object is equal to the net force acting on the object divided by the object’s mass.
second
200
When unbalanced forces act on an object at rest, the object __________ __________.
starts moving
200
Mrs. Wheeler and Mr Fillingim are trying to move their new desk. Mrs. Wheeler pulls with a force of 20N while Mr Fillingim pushes with a force of 28 N in the same direction. What is the net force?
48 N
200
If a 2kg bird is pushed by the wind with a force of 2N, how fast does the bird accelerate?
1 m/s2
300
The combination of all the forces acting on an object is the _________.
Net Force
300
Newton’s _______ law- if the net force on an object is zero, the motion of the object does not change.
first
300
A ___________ is the forces two objects apply to each other.
force pair
300
Pushing backward in order to move forward while ice skating is an example of Newton's ______ law.
third
300
What is the net force?
11 N
400
Forces acting on an object that combine and form a net force that are not zero are __________.
unbalanced
400
Newton’s ______ law- when one object exerts a force on a second object, the second object exerts an equal force in the opposite direction on the first object.
third
400
When unbalanced forces act on an already moving object, the objects ______, _______________, or both change.
speed, direction of motion
400
How much force is needed to accelerate a 3kg skateboard at 5m/s2.
15 N
400
An empty truck and a fully loaded truck are next to each other at a traffic light. When the light turns green, the lighter truck increases speed more quickly. Which of Newton's laws best explains this situations
Newton's second law
500
Because forces have direction you have to specify a _________ direction when you combine forces.
reference
500
In a circular motion, a force that acts perpendicular to the direction of motion, toward the center of the curve is __________ force.
centripetal
500
Law of __________ of _________- the total momentum of a group of objects stays the same unless outside forces act on the object
Law of conservation of momentum
500
If you kick a bowling ball and a tennis ball with the same amount of force, according to Newton’s Second Law of Motion, what will happen?
The tennis ball will travel farther than the bowling ball
500
What is the FORCE?
0 N