Potential Energy
What is potential energy?
Energy that is stored.
What is kinetic energy?
Energy of motion.
Give the formula for potential energy.
PE= mgh.
A rock is sitting on a 40 meter high cliff and has a mass of 17 kg. Calculate the POTENTIAL energy of the rock.
6664 J
Give an example of a balanced force.
Open-ended, as long as you give an accurate example.
Give 3 examples of potential energy.
Open-ended, as long as you give 3 accurate examples.
Give the point on a roller coaster has the MOST KINETIC energy.
At the bottom of a hill.
Give the formula for kinetic energy.
KE= 1/2mv2.
A car has a mass of 611 kg and is moving at 45 m/s. Calculate the KINETIC energy of the car.
13747.5 J
Give an example of an unbalanced force.
Open-ended, as long as you give an accurate example.
Give the point where a roller coaster has the MOST POTENTIAL energy.
At the top of a hill.
DAILY DOUBLE!!!!!! Give 3 examples of kinetic energy.
Open-ended, as long as you give 3 accurate examples.
What does v stand for in the formula: KE= 1/2mv2?
Velocity.
A ball is sitting on a table that is 4 meters high. It has a mass of 0.6 kg. Calculate the POTENTIAL energy of the ball.
23.52 J
Calculate the net force and direction of a box with a force of 60 N to the left and 49 N to the right.
11 N to the left.
Give the point on a roller coaster where there is the LEAST POTENTIAL energy.
At the bottom of a hill
Give the point on a roller coaster where there is the LEAST KINETIC energy.
At the top of a hill
What does m stand for in the two formulas: PE=mgh and KE=1/2mv2?
Mass.
In the 1200 question, the same ball rolls off the table at a velocity of 2.5 m/s. Calculate the KINETIC energy of the ball.
1.875 J
DAILY DOUBLE!!!!! What is net force?
It is the sum or difference of two unbalanced forces. We use the unit newtons (N).
Give the unit which we use to calculate potential energy.
Joules (J)
Give the unit which we use to calculate kinetic energy.
Joules (J)
What value is g in the formula: PE=mgh?
9.8 m/s.
A truck has a mass of 5600 kg and is moving at 23 m/s. Calculate the KINETIC energy of the truck.
1481200 J
What is the opposing force of motion?
Friction.