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100

________ _________ is the energy of motion?

What is kinetic energy?

100
The amount of kinetic energy that an object contains depends upon two things: speed and ________.
What is mass?
100

In the kinetic energy and gravitational potential energy formulas what unit is mass measured in?

What is Kilograms (kg)?

100
Acceleration is measured in ___________?
What is m/s2?
100

What is the value of the acceleration due to gravity (g) that is used in the Ep calculations?

What is 9.81m/s2?

200

The main difference between a scalar and a vector is that a vector also shows ___________.

What is direction?

200
An object travels a distance of 10.0 m in 4.6 s. What is the average speed of the object?
What is 2.2m/s?
200

All forms of energy can be ______________ into other forms of energy.

What is the converted of changed?

200
The energy stored in the nucleus of an atom is known as what?
What is nuclear potential energy?
200

If it took 565 J of gravitational potential energy to carry a 12 kg box up a flight of stairs, how high is the flight of stairs?

What is 4.8m?

300

A car with a mass of 1500 kg is moving at a speed of 14 m/s. What is the kinetic energy of the car?

What is 1.5 x 105 J?

300
A car is initially travelling at a velocity of 4.2 m/s [W]. If the car accelerates at a rate of 0.86 m/s2, how long will it take the car to reach a velocity of 9.6 m/s [W]?
What is 6.3s?
300

A student on a bicycle started from a full stop and reached a velocity of 8.75 m/s in 3.8 s. What was his average acceleration?

What is 2.3m/s2?

300
You exert a force of 25 N on your textbook while lifting it a height of 1.4 m to put it on a shelf. How much work did you do on your textbook?
What is 35J?
300
A boulder rests on a ledge 36 m above a lake. If it has 2.8 x 105 J of gravitational potential energy, what is the mass of the boulder?
What is 7.9 x 102 kg?
400

An object is traveling at an average speed of 8.0 m/s. How long will it take this object to travel 30.5 m?

What is 3.8s?

400

A freight elevator with a mass of 120 kg is moving with a speed of 2.50 m/s. What is it’s kinetic energy?

What is 375J?

400

A model rocket started from the ground and reached an upward velocity of 66 m/s in 5.0 s. What was the rocket’s average acceleration?

What is 13m/s2?

400
What is the speed of a 0.155 kg billiard ball that has 12.0 J of kinetic energy?
What is 12.4 m/s ?
400

Assumption to make about energy conversion with falling objects

What is Ep=Ek?

500
Alex walks 1.4 km west from the school. Kendra walks 0.45 km east. What is the displacement from Alex to Kendra?
What is 1.9m E ?
500
A kerosene lantern uses 984 J of chemical potential energy and produces 75 J of light energy. How efficient is the lantern in transforming chemical potential energy into light?
What is 7.6%
500
two Laws of Thermodynamics
What is energy can not be created or destroyed only converted AND energy conversions are not 100% efficient?
500

gravitational potential depends on the _________ and the _________ of the object.

What is height and mass?

500
A pendulum converts this type of energy into another type of energy
What is gravitational potential into kinetic and back and forth?