Work
Force
Kinetic and Potential Energy
Theory
Power and Efficiency
100

Another name for work

What is energy?

100

Force always results in this.

What is acceleration?

100

The energy transferred when an object is moving.

What is kinetic energy?

100
The law that tells us matter is neither created nor destroyed, but simply changed.

What is the Law of the Conservation of Energy?

100

Heat energy always flows in this direction.

What is hot to cold?

200

The amount of work done to a 25kg object that is held stationary, 25 m above the ground.

What is 0?

200

The force that acts upon anything that is lifted or falls.

What is gravity?

200

The relationship between the energy that is available to the system and what is expended during motion.

What is equal?

200

Two types of this are Kinetic and Potential.

What is Mechanical Energy?

200

The efficiency of a vehicle that burns 34500 kJ of energy from gas but turns only 6750 kJ of that into kinetic energy.

What is 20% ?

300

The amount of work done when a 875 gram object is lifted 5.00 m off the ground. 

What is 42.9 Joules?

300

The net force if a force of 650N is applied against a 140N force of friction.

What is 510N?

300

The velocity of a 75 kg object with 8600J of kinetic energy.

What is 15 m/s ?

300

The three conditions that must be met in order for work to occur.

What are that there must be force, there must be movement, and that the movement and the force must be in the same plane (direction)?
300

The useful mechanical energy output of a motor with 75% efficiency with a potential of 5875J ?

What is 4406 J?

400

The weight of an object lifted 4.20 m in the air with 9250 J of energy.

What is 225 kg?

400

The weight in kg of a 925N object

What is 94?

400

If I push a 35kg object off the top of a slide 8.45m above the ground, how fast is it going when it hits the ground?

What is 13 m/sec?

400

These are three types of energy.

What are mechanical, nuclear, chemical, electrical and thermal?

400

The power output of a machine that can bring a 15kg object from rest to 4.6 m/s while moving 2.0 m across a frictionless surface. 

What is 370 W?

500

The work done when a force of 1645N is applied against a 555 N force of friction over a distance of 1255 cm

What is 13680 J or 1.368x 10^4 J?

500

The net force if 1235N force is applied at a 32' angle.

What is 1047 N?

500

The final velocity of an object that is thrown down at 8.6 m/s and falls 75m.

What is 39.3 m/s?

500

The law which tells us that force must be applied to speed up or slow down objects.

What is Newton's Second Law of Motion (or the Law of Inertia)?

500
How long it will take a 140W motor to lift a 42 kg object a height of 13m, if it is 88% efficient.

What is 43 seconds?