I need help with my study guide.

Question 1

1. A power rating of 1 joule per second is known as a

		watt
		newton
		joule
		horsepower

Question 2

1. If you lifted a 10 kg box up 1.5 m, how many joules of work did you do?

Question 3

1. Many forms of energy in use today can be traced back to

		the Sun
		coal
		texas
		petroleum

Question 4

1. The work accomplished by lifting an object against gravity is measured in units of

		kg
		N
		W
		J

Question 5

1. A fossil fuel that is composed of organic sediments such as bacteria that have been compressed over a long period of time is known as ____________. (spelling counts)

Question 6

1. Nuclear_________ is a reaction that splits a nucleus apart and creates a dangerous byproduct.

Question 7

1. If a ball rolls off of a shelf that is 2 meters off of the ground and the ball weights 1.5 kg, what is the kinetic energy of the ball right before it hits the ground? (Hint: you have all the information necessary to determine the initial potential energy of the ball)

Question 8

1. If a machine is designed well enough, you can get more work out of it than you put into it.

True

False

Question 9

1. Simple machines require more _____________ so that we can put in less __________ which makes the task easier to accomplish.

		fin, din
		fout, dout
		din, fin
		dout , fout