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Energy Power Work Practice Flashcards | StudBud
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Energy Power Work Practice
Energy Power Work Practice
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Questions
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Answers
1
FILL IN THE BLANK: Power is the rate at which work is completed or ______ is transformed.
time
energy
force
motion
2
What is the equation to find KE?
KE=m(v)^2/2
KE=vm^2
KE=m^2(1/2)v
KE=1/2m(v)^2
3
What is the equation to find Power?
P=WT
P=T/W
P=WxT
P=W/T
4
FILL IN THE BLANK: Work is the transfer of energy to an object that causes the body to move the _______ of the force.
direction
120 J
distance
motion
5
A rock with a mass of 5 kg is lifted up 10 m what is the PE of the rock?
500
490
490 J
500 J
6
FILL IN THE BLANK: PE depends on both ____ and ____
Mass and distance
Mass and speed
Mass and direction
Mass and hight
7
FILL IN THE BLANKS: KE deponse on both ____ and ____
Mass and distance
Mass and velocity
Mass and speed
Mass and direction
8
TRIVIA: what is the hardest rock?
Dimond
Crystal
Coal
Geo
9
TRAVIA: What is the name of the bear in jungle book?
Blue
Bagoue
Baloo
Bongo
10
You do 45 J of work in 5 sec. How much power do you have?
5 w
5
225 w
225
11
A ball with the mass of 0.145 kg is thrown at a velocity of 30 m/s. what is the KE of the ball?
70
70 J
65.25 J
65.25
12
TRIVIA: Which super hero has a side kick named Robin?
Batman
Superman
Spiderman
Batwomen
13
What is the PE of a truck with a mass of 1200 kg at the top of a 42 m high hill?
490,000 J
490,000
493,920 J
493,920
14
What is the equation to find Work?
W=F/D
F=WxD
W=FxD
W=D/F
15
A boy & skateboard have a mass of 80kg they travel at a velocity of 10m/s what is the KE of the boy & his skateboard?
80000
80000 J
4000 J
4000
16
You carry a 20 N box through a 6.0 m hallway. How much work was done?
120 J
110 N
3.3 J
120 N
17
What is the equation to find PE?
PE=mwg
PE=mhw
PE=mgh
PE=m+g+h
18
You push down on a 2.0 box for 12 minutes. How much work was done?
0
24 J
24
0 J
19
TRAVIA: How many hearts do an octopus have?
7
9
3
5
20
A car uses 5,000 joules in 25 second. Find the power.
100
200 W
100 W
200
