NEW
Font size
S
M
L
XL
WorksheetsPractice Log 14 Retake
Total questions: 10
Worksheet time: 20mins
Name
Class
Date
1.
Energy of a rock perched on a cliff is an example of...
a)
gravitational
b)
elastic
c)
chemical
d)
kinetic
2.
How do you calculate power?
a)
P = W/t
b)
P = E/t
c)
P = w * t
d)
P = bbq/chicken
3.
How do we calculate work?
a)
W = F * d
b)
w = f * D
c)
W = F * D
d)
w = f * d
4.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
5.
The SI unit of work is?
a)
Joules
b)
Watts
c)
Newtons
d)
meters
6.
What is the formula for Kinetic Energy?
a)
PE = m*g*h
b)
KE = 1/2m*v2
c)
W = F*d
d)
P = W/t
7.
If 150 Joules of work is needed to move a box 10 meters, what force was used?
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
8.
Why does the total amount of mechanical energy stay constant in a system?
a)
energy is not created or destroyed
b)
energy leaves
c)
energy enters
d)
energy is not converted from one form into another
9.
A kid throws a ball with a force of 70N over 1.1 meters. How much work did he do?
a)
77 joules
b)
70 joules
c)
7.7 joules
d)
11 joules
10.
This theorem states, "Whenever work is done, energy changes.
a)
Work-Energy Theorem
b)
Paul-Newman Theorem
c)
Action-Reaction Theorem
d)
Study-Now Theorem
Reset
