Potential Energy
If you want to increase an object’s potential energy, what two things could you change?
Increase its height and mass
Which of the following factors affect the kinetic energy of an object?
Mass and speed of the object
The tendency to pull other objects toward it
Attraction
How many Laws of Motion are there?
3
What are the two types of what force can be?
Balanced and Unbalanced
A system of objects can contain both _______________ energy and ______________ energy
Kinetic; potential
Which of the following correctly describes the relationship between kinetic energy and the mass of an object?
Kinetic energy increases as mass increases
The tendency to push other objects away from it
Repulsive
Who created the Laws of Motion?
Sir Isaac Newton
What are balanced forces?
Two forces acting in opposite directions of an object and equal in size
When two objects interact, each one exerts a ____________ on the other that can cause _____________ to be transferred to or from the object.
force; energy
Which of the following represents the relationship between kinetic energy (KE), mass (m), and speed (v)?
KE = m * v
_______________ run on electricity and they are only magnetic when the electricity is flowing
electromagnet
Whats Newton's third Law of Motion?
For every action (force) in nature there is an equal and opposite reaction.
What are Unbalanced forces?
Cause change in the motion of an object
A ball is hit up in the air. At its highest point the ball has the _____________ amount of potential energy. Right before it hits the ground it has the _______________ amount of potential energy
Greatest; smallest
Which of the following units are commonly used to measure kinetic energy?
Joules
An electric field is caused by positively or negatively charged areas in the clouds or on the ground, attracting each other.
Lighting
During a earthquake whats the opposite reaction force?
Shake
What is the unit of measurement for force?
Newton
Imagine you are at a playground with a slide. At what point on the slide does your kinetic energy increase while your potential energy decreases?
As you begin to move downward from the top of the slide
Increasing an object's speed by a factor of 6 will increase the kinetic energy the object has by a factor of ______.
36
What is an electromagnetic force?
It is charged particles that act on each other across a distance. The particles usually fall into a line or pattern.
When a bowling ball pushes up against the pins what is the opposite reaction force?
Pins hit the bowling balls
What is frame of reference?