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WorksheetsUnit 7: Quiz #1 Energy, Work, & Power
Total questions: 23
Worksheet time: 18mins
A motorcycle with a mass of 400 Kg has Kinetic Energy of 10,000 J. How fast is it moving?
70.7 m/s
7.07 m/s
3.5 m/s
30.5 m/s
A drone with a mass of 7 Kg is surveying the land for a new bridge to be built across a trench. The drone is 55 m off of the ground and is traveling with a velocity of 3 m/s. What is the drone's Total Mechanical Energy?
3,805 J
38.05 J
31.5 J
3773 J
A Boeing 747 has a mass of 362,870 kg. When it takes off of the ground, it has a velocity of 290. Km/h, or 80.5 m/s. Calculate the Kinetic Energy the Boeing’s Jet Engines must produce in order for it to make a proper takeoff.
14.6 Million Joules
1.175 Trillion Joules
1,175 Joules
1.175 Billion Joules
If a woman does 50 Joules of work lifting a dumbbell in 5 seconds. How much power did she generate?
10 Watts
2.5 Watts
100 lbs * sec
4 lbs/ sec
A force of 500 N was used to pull a crate 10 meters along the ground. What is the amount of work that was done?
5,000 J
500 J
5,000 W
500 W
If it took 17 seconds to move the crate with a force of 500 N for a distance of 10 meters, how much Power was performed?
85,000 W
2.941 W
294.1 W
850 W
A cyclist with a mass of 80 kg is on a bike with a mass of 7 Kg. The cyclist is at the top of a hill. The hill is 30 m above sea level. If the cyclist is at rest and then lets his bicycle gain speed as it rolls down the hill, what will their velocity be at sea level?
2.42 m/s
147 m/s
24.2 m/s
14.7 m/s
A waiter holds a tray in place. Did they do any work?
Ya
Nah
You do work when
you exert a force on an object but the object does NOT move.
you exert a force on an object and it moves in the opposite direction of your force.
you exert a force on an object that causes it to move in the same direction as the force
the object moves, but no force is applied.
In which of these cases is work being done?
A student sleeps
A student pushes a locked door that does not move
a student pushes his chair into another room
A student sits on the carpet
Which equation is the one for power?
P = F/A
W = F x t
p = m v
P = W / t
