WorksheetsFormula sheet Quiz
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
Determine the kinetic energy of a 625-kg roller coaster car that is moving with a speed of 18.3 m/s.
a)
KE = 4.19 x 105 Joules
b)
KE = 24.5 m/s
c)
KE = 1.05 x105 Joules
d)
KE = 80 000 J
2.
If the roller coaster car in the above problem were moving with twice the speed, then what would be its new kinetic energy?
a)
KE = 4.19 x 105 Joules
b)
KE = 5.25 x 112 Joules
c)
KE = 3.09 x 111 Joules
d)
KE = 434 x 247 Joules
3.
A fruit hangs from a tree and is about to fall to the ground of 10 meters height. It has a potential energy of 22.5 J. Calculate the mass of the fruit
a)
Mass is 0.229 kg
b)
Mass is 0.344 kg
c)
Mass is 3.86 kg
d)
Mass is 5.34 kg
4.
5 kg weighing cat climbing at the top of the tree has a potential energy of 1176 kg. Find the height of the tree?
a)
The height of the tree 12 cm
b)
The height of the tree 31 cm
c)
The height of the tree is 55 cm
d)
The height of the tree is 24 cm
5.
What is the kinetic energy of a 56 kg mass moving with a velocity of 3 m/s?
a)
165.7 j
b)
247.5 j
c)
423.2 j
d)
712. 5.j
6.
A motorbike has 4500 j of KE and is traveling at 15 m/s. What is its mass?
a)
45 kg
b)
28 kg
c)
33 kg
d)
82 kg
7.
A block of mass 2.0 kg rests on a table. If its gravitational potential energy is 0 Joules now, what will its gravitational potential energy be when it is raised 1.0 meter above the table?
a)
20 Joules
b)
46 Joules
c)
50 Joules
d)
22 Joules
8.
t takes a force of 20 Newtons to hold a spring stretched to a distance of 40 cm. What is the elastic potential energy of the spring at this position?
a)
4 Joules.
b)
3 Joules
c)
44 Joules
d)
65 Joules
9.
if a force of 14.7 N is used to drag the loaded cart (from previous question) along the incline for a distance of 0.90 meters, then how much work is done on the loaded cart?
a)
W = 13.2 J
b)
W = 12.6
c)
W = 31.5
d)
W 2.12
10.
An owl has a mass of 4 kg.
It dives to catch a mouse losing 800 J of GPE. How high was the bird to begin with?
It dives to catch a mouse losing 800 J of GPE. How high was the bird to begin with?
a)
77 m
b)
64 m
c)
20 m
d)
19 m
11.
A boy has a mass of 55 kg.
He climbs 12 m up a tree.
What is his gain in GPE?
He climbs 12 m up a tree.
What is his gain in GPE?
a)
1000 J
b)
2309 J
c)
1377 J
d)
1111 J
12.
If you perform 40 J of work lifting a 10 N box from the floor to a shelf, how high is the shelf?
a)
4.0 m
b)
6.0 m
c)
2.0 m
d)
9.0 m
13.
What is the unit of work?
a)
Joules
b)
Watts
14.
A medicine ball has a mass of 5 kg and is thrown with a speed of 2 m/s. What is its kinetic energy?
a)
3 J
b)
8 J
c)
17 J
d)
10 J
15.
An object that has kinetic energy must be
a)
moving
b)
Still
100 %
