John does 80 Joules of work in 5 seconds. How much power was used?
16 watts
100
Alexis pushes a cart with 60 newtons 7 meters across the room. How much work did she do?
420 Joules
100
An object that has kinetic energy must be _________
moving
100
Potential Energy is the energy an object has because of its ___________
position
200
The unit of Power is the _________
watt
200
Andrew pushes a box 12 meters across the room in 10 seconds with 40 newtons of force. How much power was used?
48 Watts
200
Billy carried 30 Newtons of books from Mr.Gil's room to the cafeteria a distance of 20 meters. How much work did billy do?
no work
200
A 4 kg remote control car moves at a velocity of 6 m/s. What is its kinetic energy?
72 Joules
200
A 60 Newton bag is on a cliff 80 meters high. What is its potential energy?
4800 Joules
300
If Mr Fig, last name Newton pushes an object with twice the force for twice the distance he does _______________
four times (quadruple) the work
300
An elevator moves a combined weight of 8000 Newtons up 60 meters in 1 minute. How much power is used?
8000 Watts
300
A 40 kg llama moves 12 meters vertically going up stairs. How much work is done by the llama?
4704 Joules
300
A 40 kg rock is held 4 meters in the air. How much kinetic energy will it have when it strikes the ground?
1568 Joules
300
A 2 kg rock is thrown vertically at 45 m/s. How much potential energy will it have at its highest point?
2025 Joules
400
An arrow in a bow has 70 J of potential energy. Assuming no loss of energy due to heat, how much kinetic energy will it have after it is shot?
70 joules
400
A microwave with 500 Watts of power heats up a hot pocket in 2 minutes. How much work was done in heating up the hot pocket?
60000 Joules
400
Troy's 4 kg cast on his foot has to be propped up. He lifts his foot up half a meter. How much work did troy's foot do?
19.6 Joules
400
A 40 kg bag is being held up 15 meters in the air. What is the bags velocity when it strikes the ground? (neglecting air resistance)
17.14 m/s
400
A bow was pulled back with 80 Newtons of force and moved the string back 1.5 meters. How much potential energy does it have?
120 Joules
500
What is the effect on kinetic energy of doubling the velocity?
Kinetic energy is quadrupled
500
It takes 120000 Joules of work to push a cart. He uses 5000 Watts of power. How long does it takes?
24 seconds
500
A full bucket of water weighs 85 Newtons. A hobbit lifts up four and a half buckets of water 25 meters up out of the well. How much work does the hobbit do?
9562.5 Joules
500
A car weighs 98000 newtons and is moving at 6 m/s. What is the cars kinetic energy?
180000 Joules
500
A 196 Newton bowling ball is thrown up with a velocity of 6 m/s. How high up in the air does it go?