Max speed a falling object can achieve (air resistance=force of gravity).
200
What is resistance?
The force a machine has to overcome.
200
What is kinetic energy?
Energy in motion.
200
What if reflection?
The bouncing of a light ray off a smooth surface.
300
What is mass?
A measure of how much matter is in an object.
300
What is Newton's first law of motion?
An object at rest will remain at rest and an object moving at a constant velocity will continue moving at a constant velocity unless it is acted upon by an unbalanced force.
300
Name all 6 simple machines.
What are lever, pulley, wheel and axle, screw, wedge, inclined plane.
300
What is the law of conservation of energy?
Energy can neither be created nor destroyed.
300
List two uses for a concave mirror.
Back of car headlights, shaving.
400
What two factors affect pressure?
Force/Area
400
What is Newton's second law of motion?
Acceleration depends on the objects mass and on the net force acting on the object.
400
What is a block and tackle pulley?
System of pulleys and ropes
400
What is energy?
The ability to do work or cause change
400
Define translucent.
Some light passes through.
500
What two factors affect gravity?
Mass/Distance
500
What is Newtons third law of motion?
An object exerts a force on another object, and then the second object exerts a force of equal strength in the opposite direction on the first object.