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Worksheets4th 6 weeks Review
Total questions: 40
Worksheet time: 1hrs 21mins
Name
Class
Date
1.
It takes 20 N of force to move a box a distance of 10 m. How much work is done on the box in Joules?
a)
200 J
b)
20.0J
c)
100 J
d)
10 J
2.
Two factors that determine work are
a)
size of the force, and distance
b)
size of the force, and type of force
c)
mass, and distance
3.
units for work are
a)
netwons
b)
joules
c)
meters
d)
seconds
4.
work transfers
a)
sweat
b)
energy
c)
velocity
d)
effort
5.
____________ is the ability to cause change.
a)
Energy
b)
Force
c)
Friction
d)
Motion
6.
Energy due to motion is ____________ energy.
a)
Potential
b)
Energy
c)
Kinetic
d)
Friction
7.
The faster an object moves, the ________ kinetic energy it has.
a)
more
b)
less
c)
none of the above
d)
all of the above
8.
__________ is stored energy.
a)
Potential
b)
Kinetic
c)
None of the above
d)
All of the above
9.
When you are holding a book, energy is stored between the book and Earth; this type of energy is called ________ potential energy.
a)
Kinetic
b)
Potential
c)
Gravity
d)
Friction
10.
Gravitational potential energy depends on the ________ and ________ of the object.
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction
11.
A golf pro swings his driver which weighs 0.75Kg at a velocity of 60 m/s. Calculate the kinetic energy of the club.
a)
2700 J
b)
16.9 J
c)
1350 J
d)
45 J
12.
What is the KE of a football which has a mass of 0.8 kg and is kicked at a velocity of 10m/s.
a)
80 J
b)
3.2 J
c)
160 J
d)
40 J
13.
An object with a kinetic energy of 2160 J has a mass of 120 kg. Calculate its velocity.
a)
720 m/s
b)
6 m/s
c)
36 m/s
d)
72 m/s
14.
Mechanical energy can be defined as:
a)
the energy associated with the motion and position of an object.
b)
is energy stored in the bonds of chemical compounds
c)
a form of energy that is reflected or emitted from objects in the form of electrical and magnetic waves that can travel through space.
15.
If an object has 7 Joules of K.E. and 15 Joules of P.E., how much Mechanical Energy would it contain?
a)
7 J
b)
15 J
c)
8 J
d)
22 J
16.
The Royal Gorge Bridge is situated 321m above the Arkansas River in Colorado. If the gravitational potential energy associated with a tourist on the bridge is 173000J with respect to the river, what is the tourist’s mass?
a)
5290.5 kg
b)
0.018 kg
c)
5.42 kg
d)
54.99 kg
17.
With an elevation of 5334m above sea level, the village of Aucanquilca, Chile is the highest inhabited town in the world. What would be the gravitational potential energy associated with a 64kg person in Aucanquilca?
a)
3345484 J
b)
5407.8 J
c)
816.76 J
d)
72.31 J
18.
An axe is used to strike a tree. Compared with the time the axe acts on the tree...
a)
the tree acts for less time on the axe.
b)
the tree acts for more time on the axe.
c)
the tree acts for the same amount of time on the axe.
19.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
20.
Paul is riding a motorbike while wearing a helmet with a face shield. A beetle hits Paul's face shield while Paul is moving at 30 mph. Which undergoes the greater change in momentum?
a)
Paul
b)
Beetle
c)
both are the same
21.
A 5 N force is applied to a ball to slow it down in 3.6 seconds. The impulse on the ball is ______ N s.
a)
-2.5
.
.
.
.
b)
-10
c)
-18
d)
-45
22.
A 5N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s. The time for the collision is _____ seconds.
a)
1.8
.
.
.
.
b)
2.5
c)
3.6
d)
10
23.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
24.
The units for momentum are
a)
kg
b)
m/s
c)
kg-m/s
d)
kg/m/s
25.
How much momentum does a stationary battle ship have if it has a mass of 2,575,000 kg?
a)
2,575,000 N
b)
2,575,000 kg m/s
c)
0 Momentum requires mass and velocity
d)
none of the above
26.
How much momentum does a 50 kg mass moving at 10 m/s have?
a)
5 kg m/s
b)
500 kg m/s
c)
5 N
d)
500 N
27.
The momentum of a truck traveling in a straight line at 25 m/s is 37,500 kg m/s. What is the truck's mass?
a)
937,500 kg
b)
937,500 N
c)
1,500 N
d)
1,500 kg
28.
If an action force is a golf club hitting a golf ball, then the reaction force is
a)
exerted on the golf ball
b)
exerted on the golf cart
c)
exerted on the golf club by the golf ball
d)
exerted by the squirrel that is hiding in the tree
29.
What is the formula for calculating momentum?
a)
m=mv
b)
p=m/v
c)
p=v/m
d)
p=vm
30.
The momentum of an object depends upon the object's ___________&_____________.
a)
size and shape
b)
mass and veloctiy
c)
mass and energy
31.
Momentum is a property of.....?
a)
velocity
b)
moving objects
c)
non-moving objects
32.
The Law of Conservation of Momentum states that any time objects collide, the total amount of _____________ stays the same.
a)
momentum
b)
energy
c)
friction
33.
Two objects of the same mass collide with each other. The second object is at rest and the first is moving at 5 m/s North before the collision. After the collision, the first mass is at rest and the second mass continues at 5 m/s North.
The type of collision represented by these two masses is
The type of collision represented by these two masses is
a)
Inelastic
b)
Completely Inelastic
c)
Elastic
34.
Shaniqua noticed a collision outside the coffee shop where two cars collided and stuck together. What type of collision did she observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
35.
A change in momentum is called an ____________.
a)
impulse
b)
amperes
c)
force
d)
power
36.
What is the equation for an impulse?
a)
F * t = Δp
b)
p = m * v
c)
KE = 0.5 * m * v2
d)
Δp = pf - pi
37.
If the kinetic energy of this collision IS conserved, the you would classify it as a _______________ collision.
a)
elastic
b)
inelastic
c)
perfectly inelastic
38.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
39.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
40.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
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