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Forces
Work, Energy & Power-1
Work, Energy & Power-2
Work, Energy & Power-3
Energy stuff
100
A measure of the quantity of matter is
What is mass?
100

The statement by Newton that for every action there is an equal but opposite reaction explains the _______ of law of motion?

What is the Third?

100

The energy form associated with an object in motion.

What is kinetic energy?

100

If an object has a mass of 35kg what would its weight be? 

343 Newtons

100

Temperature is the measure of what? 

Average kinetic energy in an object

200

A newton is equivalent to _______ (units)

What is kg·m/s^2?

200
1 joule is equal to what? 

1 Newton displaced by 1 meter

200

______ is the energy form that is associated with an object due to its position

What is potential energy?

200

For work to be done the object has to do what? 

move from its original position

200

Heat always travels in what direction, never in the reverse? 

from warmer objects to cooler objects

300
_____ causes a moving object to change direction.
What is Force?
300

A hammer drives a nail into a piece of wood. Identify an action-reaction pair in this situation.

What is the hammer exerts a force on the nail; the nail exerts a force on the hammer?

300

______ is the kinetic energy of a 0.135 kg baseball thrown at 40.0 m/s.

What is 108 J?

300

A 15N box is pushed 20meters. What work was done

300 Joules

300

What is the difference between conduction and convection?

Conduction is solid to solid, Convection is thermal energy traveling through fluids (liquid and gas)
400

A person is pulling a cart to the east with 50N of force and his friend is pulling to the west with 75N of force. What is the resultant force in what direction? 

25N to the West

400

A construction worker pushes a wheelbarrow 5.0 m with a horizontal force of 50.0 N. The amount work done by the worker on the wheelbarrow is _____.

What is 250 J

400

How can I increase the kinetic energy of an object? There are 2 ways. 

Increase the mass or the velocity

400

45000J were created in 60 seconds. What was the power output? 

750 Watts

400

How is radiation different than convection and conduction?

Radiation travels in waves

500

An electric vehicle has a power rating of 333,100 W.  If the car does 1,665,500 J of work how much time does that take?

5 seconds

500

________ is the formula that would be used to directly calculate the kinetic energy of an object with mass bouncing up and down on a spring with spring constant.

What is KE=1/2 x mass x velocity?

500
________ is the rate at which work is done.
What is power?
500
_____ is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 m in 4.2 s.
What is 560 W?
500

The law of conservation of energy states

Energy cannot be created or destroyed it just changes form.