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Science Unit 1 Review
Test Description: Science Unit 1 Review
Instructions: Answer all questions to get your test result.
1) What is a push or pull of an object?
A
motion
B
gravity
C
friction
D
force
2) Why is it harder for the boy in image B to get down the hill?
A
friction
B
work
C
motion
D
displacement
3) Which force produces a change in motion
A
frictional force
B
balanced force
C
gravitional force
D
unbalanced force
4) If 2 equal forces (force A and force B) are pulling in opposite directions, what will happen?
A
the object's movement will be overcome by friction
B
force B will overcome force A
C
the object will not move
D
force A will overcome force B
5) ______________ is how fast an object changes over time
A
acceleration
B
velocity
C
momentum
D
speed
6) What is the formula for force?
A
F=M*A
B
F=M/A
C
F=M*F
D
F=A/M
7) What happens when 2 forces act in the same direction?
A
The stronger one prevails
B
They cancel each other out
C
Their strengths are added
D
Their sum divided by the 2 is the total force
8) Any time the forces are unbalanced, an object will remain at rest. True of False?
A
False
B
True
9) When you tell the direction and speed of an object, you give its
A
motion
B
mass
C
velocity
D
acceleration
10) Force A (10 Newtons) is pulling an object up. Force B (5 Newtons) is pulling the same object down. What is the net force?
A
15 Newtons up
B
5 Newtons up
C
5 Newtons down
D
15 Newtons down
11) Which of the following statements is true?
A
Balanced forces cause a change in motion
B
Forces do not effect the change in motion
C
Unbalanced forces cause a change in motion
12) A flat line on a Distance/Time graph represents what?
A
Not moving
B
Constant speed
C
Acceleration
13) If a 10 kg object accelerates suddenly at 15 m/s2, how much force was applied to the object?
A
15 Newtons
B
150 kg
C
100 kg
D
150 Newtons
14) A baseball is thrown a distance of 50 meters. What is the speed if it takes 2 seconds to cover that distance?
A
100 seconds
B
100 m/s2
C
25 m/s2
D
52 m/s2
15) Which of the following objects has the least acceleration?
A
an empty shopping cart pushed with a light force
B
a full shopping cart pushed with a light force
C
an empty shopping cart pushed with a hard force
D
a full shopping cart pushed with a hard force
16) Speed is equal to
A
Time/Distance
B
Acceleration
C
Time x distance
D
Distance/time
17) Speed is different from velocity because
A
Velocity doesn't include distance
B
Velocity has a direction
C
Velocity doesn't include time
D
Speed uses distance/time
18) 8 Newtons to the left and 4 Newtons to the right. Find the net force. Is this balanced?
A
4 N Left Yes
B
12 N Right Yes
C
12 N Right No
D
4 N Left No
*select an answer for all questions
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