Energy (Part 1)
Energy (Part 2)
PE Math
KE Math
Miscellaneous
100
What is the WORD that means "the ability to do work"?
Energy
100
Is the amount of potential energy LOW, MEDIUM, or HIGH at the bottom of a roller coaster?
Low
100
The equation for Potential Energy is PE = mgh - what does the "g" stand for?
Gravity
100
The equation for Kinetic Energy is KE = 0.5mv2 - what does the "v" stand for?
Velocity
100
Name a singer, group, band you think I would like! I'll pick my favorite.
:)
200
All energy is measured in ______.
a. Watts (W)
b. Seconds (s)
c. Joules (J)
c. Joules (J)
200
Which type of energy (potential or kinetic) does a car going 35 miles per hour have?
Kinetic
200
What is the value for GRAVITY?
9.8 m/s2
200
The equation for Kinetic Energy is KE = 0.5mv2 - what does the "m" stand for?
Mass
200
Mechanical Energy is a combination of Potential and Kinetic together. The equation is PE + KE = ME.
If potential is 200 J and kinetic is 300 J, how much mechanical energy is there?
500
200 + 300 = 500 Joules
300
All energy can be described as either stored or in motion. Name the two MAIN types of energy!
Potential & Kinetic
300
The ______ an object MOVES, the more kinetic energy (more / less).
More
300
PE = mgh
Find PE if mass is 75kg, gravity is 9.8, and height is 20m.
14,700
75 x 9.8 x 20 = 14,700 J
300
KE = 0.5mv2 (do the v2 first)
Find KE if mass is 2 kg with a velocity of 2 m/s.
4
0.5 x 2 x 22 = 4 Joules
300
Name a movie you think I would like! I'll pick my favorite :)
:)
400
The Law of Conservation of Energy states that "energy cannot be _____ or _____, but instead transformed into other types" (2 answers).
created, destroyed
400
What type of energy (potential or kinetic) does a trampoline have when you are STANDING on it?
Potential
400
PE = mgh
Find PE if mass is 3kg, gravity is 9.8, and height is 15m.
441
3 x 9.8 x 15 = 441 J
400
KE = 0.5mv2 (do the v2 first)
Find KE if mass is 20 kg with a velocity of 35 m/s.
12,250
0.5 x 20 x 352 = 12,250 Joules
400
Spell this notorious serial killer's name - CORRECTLY!
Jeffrey Dahmer
500
In a roller coaster, the highest point of the roller coaster has the MOST ____________ energy.
Potential
500
An apple is FALLING from a tree. What type of energy is this?
Kinetic
500
A roller coaster with a mass of 500 kg and is 90 m high in the air. How much Potential Energy does it have? (HINT: PE = mgh, g is 9.8)
441,000
500 x 9.8 x 90 = 441,000 J
500
A football quarterback throws a ball with a mass of 0.4 kg to the wide receiver with a velocity of 25 m/s. How much Kinetic Energy does it have?
(Hint: KE = 0.5mv2, find the v2 first)
125
0.5 x 0.4 x 252 = 125 Joules
500
TRUE or FALSE: Kinetic Energy is STORED energy!
False. Kinetic is motion, Potential is stored.