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Physics practice test questions with complete solution

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Physics practice test questions with complete solution Physics practice test questions When a junked car is compacted, which statement is true? A. Its mass increases. B. Its mass decreases. C. Its density increases. D. Its density decreases. - correct answer C. ( the mass of the car do...

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  • October 19, 2024
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  • 2024/2025
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Physics practice test questions
When a junked car is compacted, which statement is true?
A. Its mass increases.
B. Its mass decreases.
C. Its density increases.
D. Its density decreases. - correct answer ✔C.
( the mass of the car does not change, but once it is compacted there is an
increase in density)


A car travels 3 miles north, 6 miles south, 2 miles east, 2 miles west, & then 3
miles north. Which of the following is true?
A. The displacement of the car is 16 miles, & the distance traveled is 0 miles.
B. The displacement of the car is 16 miles, & the distance traveled is 16 miles.
C. The displacement of the car is 0 miles, & the distance traveled is 0 miles.
D. The displacement of the car is 0 miles & the distance traveled is 16 miles. -
correct answer ✔D
(if you add up all the miles it is 16
but if you follow the directions you end up back where you started)


Why doesn't a raindrop accelerate as it approached the ground?
A. Gravity pulls down at a constant rate
B. Air resistance counteracts the gravitational force
C. Its mass decreases, decreasing its speed
D. Objects in motion decelerate over distance. - correct answer ✔B
(gravity causes acceleration. Losing mass does not change the acceleration.)

,An object moves 100 m in 10s. What is the velocity of the object over this
time?
A. 10 m/s
B. 90 m/s
C. 110 m/s
D. 1,000 m/s - correct answer ✔A
(velocity is the change in distance over time. So 100m /10s is the same as 10)


Which of these objects has the greatest momentum?
A. a 1,250-kg car moving at 5m/s
B. an 80-kg person running at 4m/s
C. a 10-kg piece of meteorite moving at 600 m/s
D. a 0.5-kg rock moving at 40 m/s - correct answer ✔A
(the car is moving with the most momentum at 1,250-kg.)


Sublimation is the change in matter from solid to gas or gas to solid without
passing through a liquid phase. Outside of the laboratory, which solid provides
the best example of this?
A. Iron
B. silver
C. salt crystal
D. dry ice - correct answer ✔D
(dry ice is the only thing that transforms into a gas without turning into a liquid
first)


A 1.0-kg block on a table is given a push so that it slidse along the table, if the
block is accelerated at 6 m/s^2 , what was the force applied to the block?
A. 0 N

, B. 3 N
C. 6 N
D. The answer cannot be determined from the information given. - correct
answer ✔C
(according to newtons law, requires a 6n force)


A 60-watt lightbulb is powered by a 110-volt power source. What is the current
being drawn?
A. 0.55 amperes
B. 1.83 amperes
C. 50 amperes
D. 6,600 amperes - correct answer ✔A
(if you divide 110 by 60 you get around 0.55)


A wave moves through its medium at 20m/s with a wavelength of 4m. What is
the frequency of the wave?
A. 5 s-1
B. 16 s-1
C. 24 s-1
D. 80 s-1 - correct answer ✔A
(if you divide 20 by 4 you get 5)


An electromagnet is holding a 1,500-kg car at a height of 25m above the
ground. The magnet then experiences a power outrage, & the car falls to the
ground. Which of the following is false?
A. The car had a potential energy of 367.5 kJ
B. 367.5 kJ of potential energy is converted to kinetic energy
C. The car retains potential energy of 367.5 kJ when it hits the ground.

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