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conservation of energy
spring potential energy
Work/power
wild card
100
Identify one form of energy that the elastic potential energy of the spring is converted to when a spring toy pops.
What is kinetic energy or gravitational potential energy?
100

A child does .20 J of work on a spring toy to compress it.  The mass of the toy is 0.01 kg.  What is the maximum vertical height it can reach when it pops up?

2 m

100

A motor does a total of 480 J of work in 5 seconds to lift a 12 kg block to the top of a ramp. The average power developed is?

What is 96W?

100

Using a force(on the y) and distance (on the x) graph, how would we find the work done

The area under the curve

200
This happens to the mechanical energy on a friction-less track of a roller coaster.
What is remains the same?
200

What equations would you use to calculate the spring constant of a toy when you have the mass and the x and the distance it pops up?

What is GPE and EPE or mgh=1/2 kx^2?

200

What is the power output of an electric motor that lifts a 2 kg block 15 m high in 6 s?

What is 49W?

200

A 25 gram paper cup falls from rest off the edge of the tabletop .90 m above, it the cup at 0.18 J of KE as it hits the ground, how much energy was converted to internal energy?

.04 J

300
What type of energy will increase as a roller coaster moves up a hill?
What is potential energy?
300

A pop up toy is compressed a total of .070 meter with a downward force of 12 N, what is the spring constant?

170 N/m

300

A 15kg mass is moving 7.5 m/s what is the total work that must be done to increase the speed to 11.5 m/s?

What is 570J?

300

A book of mass m falls freely from rest to the floor from the top of a desk of height h. What is the speed of the book upon striking the floor?

What is the square root of 2gh?

400
A child starting from rest at the top of a playground slide reaches a speed of 7 m/s at the bottom of the slide. What is the vertical height of the slide?
What is 2.5m?
400

Calculate the PE energy of a spring toy with a spring constant (k) of 170 N/m that is compressed a distance of 0.70 m

What is 42 J?

400

how much work is required to lift 10 N from 4 meters to 40 meters?

What is 360J?

400

The kinetic energy of a 55kg skier traveling at 9 m/s

What is 2200 J?

500
Draw a pendulum and label the points of greatest KE and greatest PE

Greatest KE is at the bottom and greatest PE is at the top.

500

Identify one form of energy that the elastic potential energy is converted to as a spring toy pops up.

KE, GPE, sound, internal...

500

Levi with a mass of 55 kg climbed the stairs in 4.8s, and Evan with a mass of 65kg climbed the stairs in 5.6 s, who generated the most power? Assuming they climbed the same stairs. This is not actual events any relation to actual events is coincidental...

Who is Evan?

500

Two objects, A and B, are held one meter above the horizontal ground. The mass of B is twice the mass of A. If the PE is the GPE of A, then the GPE of B is?

What is 2PE?