This is the change in an object's position
Motion
Which law says that an object in motion tends to stay in motion (it tends to stay at the same velocity) unless another force causes it to change?
First Law
Force x _____________ = work
distance
A ______________ machine combines two or more simple machines to make work even easier.
Compound
What is a force?
A push or a pull
Reference point
Which law says that all forces come in pairs, and for every action is an equal and opposite reaction?
3rd law
Any object that makes work easier.
An axe, knife blade, or even nails are examples of which simple machine?
Wedge
This is a force that keeps objects from moving against other objects.
Friction
Stored energy is called ______________.
Potential energy
Rockets ascend because of which of Newton's laws of motion?
3rd law
This machine consists of a wheel and a rod running through the wheel.
Wheel and axle
What simple machine makes moving boxes up the steps of your house easier?
Inclined plane
What is the formula to help you calculate distance?
Speed x Time = Distance
Energy due to motion is called ___________
Kinetic energy
This law of motion says that the greater the mass of an object (the heavier it is), the greater the force you need to move it.
2nd law
What are the 3 components of every lever?
Resistance force, effort force, fulcrum
This machine is an inclined plane wound around a cylinder or a cone.
Screw
This term is a change in velocity during a period of time. It can mean an object is going faster or slower, or changes direction.
Acceleration
This term refers to both the speed and direction of a moving object. It is how far an object moves over an amount of time in a certain direction.
Velocity
Why do you fly off your bike if you rode it into a concrete barrier? (please don't try this at home!)
Because of newton's 1st law (an object at motion stays in motion)
This machine may be used to lift a heavy object just a little so that a lever can then be used to lift it farther.
Wedge
Scissors are an example of a compound machine. Which simple machines do you see in scissors?
Wedges (the cutting edges), levers (the blades)
The resistance to a change in motion is called ________________.
Inertia