Force
Does your mass change or your weight when you are on different planets?
Weight.
What are two types of energy?
Kinetic and Potential
Which of Newton's laws is also referred to as the Law of Inertia?
Newton's 1st Law
If the forces acting on an object are balanced, what will the object do?
not move
Energy is....
The ability to do work.
If one person is pushing a box with the force of 12 Newtons to the left, and another person is pushing the box to the right with a force of 10 Newtons to the right, than how will the box move?
2 Newtons to the left.
What do we call the sum of all forces on an object?
Net force
Energy is never lost. It is just ...
transferred into a different form or stored.
What force resists movement between two objects?
Friction
When a roller coaster is nearing the bottom of a hill, it's kinetic energy is at it's ...
greatest
According to Newton's 2nd law, why is it more work to exert a force on a wagon full of bricks than a wagon full of feathers?
Because the greater an object's mass, the more force is needed to move it.
Why do things weigh less on the moon?
The gravitational pull is less on the moon than it is on Earth.
What is is it called when an object wants to continue doing what it is doing?
Inertia
What is one thing that affects how much potential energy an object has?
position or mass
You are riding your bike and your tire hits a rock and stops the bike suddenly. You fall forward over the handlebars. Why
Newton's 1st Law
What does Newton's second law tell us?
Force x Mass = Acceleration