Formulas
What is the formula for Work? And the units
Force * distance (Joules)
(displacement is acceptable)
How much work is required to pull a sled 5 meters if you use 60N of force?
300 Joules
A 49 newton rock is lifted 2 meters in 5 seconds.
How much work and power was used?
98 Joules
19.6 Watts
Two cars are raised to the same elevation on service station lifts. If one car is twice as massive as the other, compare their gains of potential energy.
One car will have twice the amount of gravitational potential energy
When is Mr. Clarence's Birthday?
April 10th
What is the formula for Power? And the units
Work/Time
Watts (joules per second)
How much work is done when a force of 33N pulls a wagon 13 meters?
429 Joules
DAILY DOUBLE!!! If you have a positive amount of points, select how much you wish to wager
A student who weighs 500 Newtons climbed the stairs from the first floor to the third floor, 15 meters above, in 20 seconds. What was her power?
Calculate the work done in lifting a 500 N barbell 2.2 m above the floor. What is the gain of potential energy of the barbell when it is lifted to this height?
440 Joules
How much potential energy does a 900 kg car have if it is traveling at 30 m/s on the ground?
0 Joules
What is the formula for Kinetic energy? And the units?
1/2 (m*v^2)
Joules
Angela uses a force of 25 Newtons to lift her grocery bag while doing 50 Joules of work. How far did she lift the grocery bags?
2 meters
A teacher pushed a 98 newton desk across a floor for a distance of 5 meters. He exerted a horizontal force of 20 newtons for four seconds. How work and power did he use?
100 joules
25 Watts
How much kinetic energy does a 900 kg car have if it is traveling at 30 m/s on the ground?
405,000 Joules
In the anime Demon Slayer, how many Hashira are initially shown?
9 Hashira
What is the formula for Potential energy? and the units
Mass * Gravity *Height
Joules
Arnold holds a 500kg weight above his head for 10 seconds. How much work did he exert by holding it that long?
none
20 W of power were used to do 500,000 J of work. How long did it take to get the work done?
25,000 seconds
DAILY DOUBLE!!! If you have positive amount of points, please select how much you are willing to wager.
What is the gain in gravitational potential energy if you move a 10 kg object 10 m horizontally?
In the anime Jujustu Kaisen, what is Yuta Okkostu's curse technique?
Copy anyone's curse technique after seeing it.
What is the conservation of Mechanical energy formula?
Initial PE + KE = Final PE + KE
Total mechanical energy remains the same
How much work did a 1kg apple exert if it fell 10m down to the ground? Assume g= 10m/s^2
100 Joules
40 W of power were used in 11 s. What was the work done?
440 Joules
How much total mechanical energy is contained in 2 kg rock that is suspended (stationary) 5 meters off the ground?
98.1 Joules
In the anime Attack on Titan, which titan ability does Eren possess?
The Attack Titan