Mechanical Energy
2 years ago
amirel1
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Homework
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• Question 1
60 seconds
Q. To make things move, you need a −
force.
strong magnet.
metal object.
helper.
• Question 2
60 seconds
Q. A force is a −
push.
pull.
magnet.
push or pull.
• Question 3
60 seconds
Q. Which of the following is a force that pulls?
magnetism.
gravity.
friction.
all of the above.
• Question 4
60 seconds
Q. What is true about all forces?
They are magnetic.
They push or pull.
They are very strong.
They only push.
• Question 5
60 seconds
Q.
Every time you move metal paper clips 2 cm from the magnet, 2 more metal paper clips are attracted to i it.
The closer the magnet is to the metal paper clips, the more metal paper clips will be attracted to it.
More metal paper clips are attracted to the magnet at 3 cm than at 1 cm.
Magnets should be kept 1 cm from metal paper clips.
• Question 6
60 seconds
Q. Pulling a wagon will most likely change all of the following EXCEPT its −
motion
position
direction
mass
• Question 7
60 seconds
Q.
light bulb
phone
fire house
bowling
• Question 8
60 seconds
Q. The dirt road rubs against the tires of the motorcycle and most likely causes it to ―
go faster because of friction
change directions
go slower because of friction
win a race
• Question 9
60 seconds
Q. When the football player kicks the ball it will go up in the air. What will happen next?
Gravity will pull it up higher.
The football player will push it higher.
It will fall back down to the ground because gravity pulled it.
It will fall back down to the ground because gravity pushed it.
• Question 10
60 seconds
Q. This girl has jumped up in the air. What force will cause her to come back to the ground?
Gravity
Magnetism
Electricity
Sound
• Question 11
60 seconds
Q. Gravity is a force that ─
pulls objects down.
pulls objects toward the center of the Earth.
pushes objects into the air.
has no effect on objects.
• Question 12
60 seconds
Q. If you hold ten objects in the air and then drop each one ─
only the ones with less mass will fall to Earth.
only the ones with more mass will fall to Earth.
all ten of the objects will fall to Earth.
all ten of the objects will remain where you let them go.
• Question 13
60 seconds
Q. The measure of the force of gravity acting on an object is ─
weight
length
volume
mass
• Question 14
60 seconds
Q. Which of the following would not affect a baseball game?