Equations Flashcards
(17 cards)
What is the work done if force is 80N and distance is 7m?
80 x 7 = 560
What is the force if the work done is 900J and the distance is 30m?
900 / 30 = 30N
What is the distance if the work done is 10J and the force is 10N?
10 / 10 = 1
Work done = force x distance
Gravitational potential energy = mass x gravity x change in height
If the mass is 7kg, the change in height is 6m and the gravity is 10N/kg, what is the gravitational potential energy?
7 x 6 x 10 = 420
If the gravity is 10N/kg, the change in height is 6m and the gravitational potential energy is 10J, what is the mass?
10 / ( 6 x 10 ) = 0.16
If the gravity is 10N/kg, the gravitational potential energy is 10J and the mass is 50kg, what is the change in height?
10 / (10 x 50 ) = 50
If the mass is 10kg and the speed is 2m/s. What is the kinetic energy?
0.5 x 10 x 2 squared = 20
If the speed is 8m/s and the kinetic energy is 64J. What is the mass?
64 / 0.5 x 8 squared = 2
If the kinetic energy is 10J and the mass is 2.5kg. What is the speed?
10 / 0.5 x 2.5 = 8
If the extension is 1m and the spring constant is 7N/m. What is the elastic potential energy?
0.5 x 7 x 1 squared = 3.5
If the elastic potential energy is 80J, the spring constant is 10N/m. What is the extension?
80 / 0.5 x 10 = 16
If the extension is 8m and the elastic potential energy is 9J. What is the spring constant?
9 / 0.5 x 8 squared = 0.28
How much work must be done on a spring with a spring constant of 80 N/m to stretch to spring 20cm?
0.5 x 80 x 20 squared = 16,000
What is the spring constant of a spring if the extension of the spring is 0.15m when 0.72J of potential energy is stored in it?
0.72 / ( 0.5 x 0.15 squared ) = 64
