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Physics Midterm Review 2
Test Description: Review
Instructions: Answer all questions to get your test result.
1) What causes a moving object to change direction?
A
Force
B
Inertia
C
Acceleration
D
Velocity
2) According to the scientific method, how does a physicist formulate and objectively test hypotheses?
A
by stating conclusions
B
by experiments
C
by interpreting graphs
D
by defending an opinion
3) When a car's velocity is positive and its acceleration is negative, what is happening to the car's motion?
A
The car slows down
B
The car travels at constant speed
C
The car remains at rest
D
The car speeds up
4) In whihc of the following scenarios is work done?
A
A construciton worker carries a heavy beam while walking at constant speed along a flat surface
B
A car decelerates while traveling on a flat stretch of road
C
A weightlifter holds a barbell overhead for 2.5 s.
D
A student holds a spring in a compressed position
5) The symbol mm represents a
A
millimeter
B
micrometer
C
megameter
D
manometer
6) Which of the following statements does not describe force?
A
Force causes objects to change direction
B
Force causes objets to stop moving
C
Force causes objects at rest to remain stationary
D
Force causes objects to start moving
7) Which of the following is an example of a vector quantity?
A
Temperature
B
Mass
C
Volume
D
Velocity
8) Which way does gravity always pull?
A
Depends on the surface
B
Straight down
9) Which of the following is not an example of projectile motion?
A
baseball hit by a bat
B
hot air balloon drifting toward Earth
C
long jumer in action
D
volleyball served over the net
10) A net force of 6.8 N accelerates a 31 kg scooter across a level parking lot. What is the magnitude of the scooter's acceleration?
A
0.69 m/s/s
B
4.6 m/s/s
C
3.2 m/s/s
D
0.22 m/s/s
*select an answer for all questions
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