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Unit 1 Part 1
Test Description: Force and motion
Instructions: Answer all questions to get your test result.
1) 1) Imagine you are on the top of a mountain with four basketballs. The mass of the four basketballs are 100 kilograms, 200 kilograms, 300 kilograms, and 400 kilograms. If the basketballs rolled down the hill, which one would supply the greatest force
A
100kg
B
400kg
C
200kg
D
300kg
2) Mutt and Jeff are running along a path each pushing a cart loaded with rocks. If Mutt's wagon has a mass two times greater than Jeff's and they want to arrive at their destination at the same time, what must happen?
A
Mutt and Jeff will be equal but, Mutt takes larger steps
B
Mutt must half his force
C
Mutt must double his force
D
Jeff is weak
3) Yoyo -57 grams Football - 400 grams Baseball - 145 grams Basketball - 6237 grams If you had to throw one of the four toys listed, which one would take the MOST force to throw?
A
basketball
B
yoyo
C
baseball
D
football
4) If Shane and Susan both push on a box with a force of 25N, but in opposite directions, what will happen to the box?
A
box will not move
B
box will move toward shane
C
the box will move up
D
box will move toward susan
5) wo forces are acting on a wheelbarrow. One force is pushing to the right and an equal force is pushing to the left. What can you say about the wheelbarrow's movement?
A
slows down
B
move faster and faster
C
balanced
D
speed is changing at a constant rate
6) Two opposite forces acting on a rope. What can we say is true if the forces on each side of the rope are doubled to 150 Newtons?
A
cannot be determined
B
forces balanced but no change in ropes motion is not affected
C
forces are not balanced
D
forces balanced but forces increased and ropes motion is affected
7) When a moving object is acted on by unbalanced forces, the object will
A
stop moving
B
move opposite direction as the stronger force
C
move unpredictably
D
move same direction as the stronger force
8) if the net force is zero
A
unbalanced
B
not even
C
blanced
D
unequal
9) Which example best represent an object with a balanced force acting upon it?
A
a boat moving
B
baseball thrown in the air
C
wagon rolling by itself down a hill
D
book sitting on a shelf
10) Which is an example of how can a unbalanced force change speed of an object?
A
child signing a song
B
child walking around a corner
C
child sitting in a chair
D
child braking on a bike
11) To move an object you must
A
overcome gravity
B
unbalanced force smaller than friction
C
balanced force acting on the object
D
unbalanced force greater than friction
12) If Sally pushes 10N left and Johnny pushes 50N right what is the net force?
A
60N right
B
40N left
C
40N right
D
60N left
13) If two people pull on a box, how do you calculate net force?
A
multiply
B
add
C
subtract
D
divide
14) The reason you feel pushed back in your seat going up a roller coaster is because of
A
ineritia
B
gravity
C
vectors
D
friction
15) Newton's first law of inertia example would be
A
ball sits still on the ground
B
ball slows down in the grass
C
ball rolls faster down a hill
D
ball returns to Earth when thrown up in the air
16) You fix a bowl of soup, you want to eat and watch TV. When you walk the soup spills out of the bowl. Why did this happen?
A
gravity
B
ineritia
C
density of the soup
D
speed of you walking
17) Why do you wear seat belts in cars and on rides at the fair?
A
gravity
B
electricity
C
ineritia
D
friction
18) The space shuttle heats up entering Earth, why?
A
ineritia
B
speed
C
gravity
D
friction
19) what two factors affect gravity?
A
weight and speed
B
weight and distance
C
mass and speed
D
mass and distance
20) If you throw a ball against a wall why does it bounce back?
A
Newton's 2nd law
B
Newton's first law
C
gravity
D
Newton's 3rd law
*select an answer for all questions
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