Work
Kinetic Energy
Numerical Calculations
Potential Energy
Work by Gravity
100

This is the definition of work involving angles and displacement

What is W=F cos (theta)

100

This is the definition of Kinetic Energy

What is Energy based on movement

100

A 70 kilogram man runs at a constant speed of 2 m/s. What is his kinetic Energy

What is 140 Joules

100
Potential energy is calculated by using the formula
What is PE = mgh
100

Earth is apart of the system.  True of false Gravity does work on an object that is falling.

False

200
This is the definition of work involving Kinetic Energy - be specific (include mass, velocity)
What is W = .5mvf^2 - .5mv0^2
200
What happens to the kinetic energy of a car if the speed of the car doubles.

What is quadruples in value.  

200

A 10 Newton force was used to move a box 10 meters across a surface with friction.  If the force of friction was 3 Newtons how much energy was gained by the box.  

What is 70 Joules

200
Potential Energy increases as this happens to an object
What is increasing the height of the object?
200
The value of the work done by Gravity is positive when
What is decreasing the height of the object?
300

The moon orbits the Earth in a uniform circular motion.

What is When no work is done on the moon.

300

Why can't the kinetic energy of an object ever be zero.

What is the speed of the car is squared.  

300

A 5 kilogram box slides 10 m down a frictionless surface.  If the angle between the incline and ground is 30 degrees.  What is the speed at the bottom of the incline.

What is 10 meters per second.
300
a 125 kg man climbs down a chimney that is 12 meters tall. The work done by gravity is..
What is 15,000 Joules
400

A constant net force of 500 Newtons moves a 1000 kilogram car 100m.  If the car was initially at rest then what is the car's final velocity?

What is 10 m/s.

400
True or False: An arrow shot down from a rooftop has more potential energy than an arrow dropped from the same rooftop
What is False
400
A 75 kg student climbed three flights of stairs (each flight is approximately 4 meters). The work done by the student to overcome gravity is...
What is 9,000 J
500

A 2 kg ball is thrown horizontally at 10 m/s off a 50 meter cliff. It has this much Kinetic Energy when it hits the ground

What is 5100 Joules

500
9 reindeer moving at a constant velocity carry a 10,000 kg sleigh across Springfield (a distance of 200 km) in 1 hr. The 9 reindeer can generate this much power
What is 0
500
A jolly 125 kg person holding a sack that weighs 25 kg stands on a rooftop that is 15 meters tall. The potential energy of this person and sack is...
What is 22,500 J
500

A pendulum of mass m is dropped from a horizontal position where the string of length l is taut can have as much work done by gravity as

What is mgl

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