What is potential energy?
Shawn is driving down a hill and used his brakes to slow down. What force causes him to slow down.
What is friction?
Joshua rode on a roller coaster that started with a 50ft hill. Shanice rode on a roller coaster that started with a 75 ft hill. Which roller coaster will have the most kinetic energy?
The roller coaster that Shanice rode (the 75ft) roller coaster.
Mike threw a box in the air What force caused the box to fall back down to the ground?
Gravity
A ball is sitting on the top shelf of a bookcase and another ball is sitting on the bottom shelf. Which one has the most potential energy?
What is the ball on the top shelf
This is when something is moving. It is described by direction and speed.
What is motion?
Some students apply force to a toy car on a ramp to push it down. The students measure how fast the car rolls down the ramp. If students want to increase the speed of the car down the same ramp, what should they do?
Increase the force applied to the car.
What is a type of friction which slows objects moving through air?
What is air resistance?
Ms. Starling's class and Ms. Howard's class are playing tug-of-war. After several minutes, the students notice that the rope has not moved at all. What is one possible cause of this?
The two classes have created a balanced force on the rope.
A toy car rolling along different surfaces (foil, felt, gravel) will experience different amounts of friction. A toy car would encounter the most friction when rolling on which surface?
What is gravel?
This is a force between two surfaces rubbing against each other. It works against the motion of an object.
What is friction?
David is needs to push a box up a ramp. Box 1 is 20 kilograms and Box 2 is 35 kilograms. Which box will need more force to move and why?
Box 2 will need more force because it has more mass.
A car and a truck travel at the same speed on a road in the same direction. Both vehicles slow down with the same stopping force. Why does the truck need more distance the the car to stop?
The truck has more mass.
When does a pendulum have to most potential energy?
When it is raised to one side.