Transcript chapter5reviewGame

Chapter 5 Review
Mr. Hauser
Rules of the Game
• Working in TEAMS, you will be asked to
answer questions from the assigned
chapters.
• You have 30 seconds to write the answer
down on the dry erase board.
• When the teacher says TIME’S UP, a
team leader will stand up and show the
teacher their answer.
Rules (Continued)
• Each correct answer is worth one point,
unless otherwise stated.
• Teams can lose points for inappropriate
conduct, comments, or cheating.
• The team with the most points at the end
of the game wins!
Question 1
A force applied over a distance is
called ____________.
Work
Question 2
What are the metric units
used to measure Work?
(Write out the word.)
Joules
Question 3
Energy of motion is called
A)
B)
C)
D)
Potential
Work
Kinetic
Chemical
Kinetic
Question 4
What are the metric units used to
measure power? (Write out the
word)
Watts
Question 5
A force of 45 Newtons acts on an
object at an angle of 50 degrees
above the horizontal pulling it 3
meters. How much work was
done? (you must have the
proper units with your answer)
86.8 Joules
Question 6
The rate at which work is done is
called ______.
Power
Question 7
Power is ________ related to
time.
A) directly
B) inversely
C) quadratically
D) linearly
B) inversely
Question 8
When the force acting on an object is
opposite the direction of motion of
the object, _________ work is
done.
negative
Question 9
_________ is defined as the ability to
cause change or the ability to do
work.
Energy
Question 10
If an object doubles its mass, its
potential energy will
________.
A) be halved
B) double
C) quadruple
D) be reduced to one fourth
B) double
Question 11
If an object doubles its speed
its kinetic energy will...
A) be halved.
B) double.
C) quadruple.
D) be reduced to one fourth.
C) quadruple
Question 12
List five types of non-mechanical energy
we discussed in class.
Nuclear (atomic), Thermal,
Chemical, Electrical, Light
(radiant)
Question 13
This is considered “stored” energy or
energy of position.
Potential energy
Question 14
A bird is flying above the ground. What
type or types of mechanical energy does
it have? (be as specific as possible)
Gravitational potential
energy and kinetic energy
Question 15
How much horsepower do you
have if your mass is 75 kg, and
you can climb the steps that are
3.29 meters high in a time of 2.3
seconds?
1.4 horsepower
Question 16
How much work is done to lift a
45 kg weight up a distance of
6.2 meters at a constant
velocity?
2,734 Joules
Question 17
How much work must be done
by a force to accelerate a
1800kg car from 4.5 m/s to 27
m/s? (show units)
638,000 Joules
Question 18
In the lab, we found the work done
on the bow by pulling it back by
finding the ________ under the
graph of force vs. displacement.
area
Question 19
A rollercoaster starts from rest on top of its
hill. It drops and moves through the
bottom of the hill. What types of
mechanical energy did the roller coaster
have at the top and at the bottom? (Be
as specific as possible)
Gravitational Potential
Energy at the top and
Kinetic Energy at the
bottom
Question 20
Energy can neither be
created nor destroyed but
it can be converted from
one form to another. This
statement is called ______.
Law of Conservation of
Energy
Question 21
Write the long form of the equation for the
Law of Conservation of Energy.
KEf + PEf = KEi + Pei + (Wfriction)
Question 22
All of the energy lost in a
machine due to friction
ends up in the form of
________.
Heat
Question 23
The energy that you use to move
around all day long indirectly
comes from what?
The sun
Question 24
When a spring is stretched four times
further than its relaxed position, by
what factor does its elastic potential
energy increase?
16 times
Question 25
A skier moves over top of a hill at
5.4 m/s and then drops 6.4 m
down its surface. The hill is
frictionless. What is the
velocity of the skier at the
bottom of the hill?
12.4 m/s
Question 26
A spring with with a spring
constant of 890 N/m is
compressed such that it
has 6.4 Joules of elastic
potential energy. How far
was it compressed?
0.12 meters
Question 27
An 4.5 kg model airplane
slows from 9.3 m/s to rest
with a force of 22 N. How
far did it travel during
while slowing down?
8.8 meters
FINAL
QUESTION
A roller coaster goes 14 m/s over its
second hill, which is 22 meters
high. It started from 3 m/s on top
of its first hill. How high was the
first hill?
31.5 meters