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Work and Energy

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AjPuypui

41

20 ข้อ

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# 1เลือกประเภท
What is the primary difference between work and energy?
Work is a form of energy, while energy is the ability to do work.
nergy is a form of work, while work is the ability to store energy.
Work and energy are the same thing.
Work is measured in joules, while energy is measured in watts.
# 2เลือกประเภท
Which of the following is an example of potential energy?
A ball rolling down a hill
A stretched rubber band
A moving car
A lit light bulb
# 3เลือกประเภท
If you lift a book from the floor to a table, what kind of energy does the book gain?
Kinetic energy
Potential energy
Thermal energy
Chemical energy
# 4เลือกประเภท
What is the formula for calculating work?
Work = Power x Time
Work = Energy / Time
Work = Mass x Velocity
Work = Force x Distance
# 5เลือกประเภท
If you push a wall with all your might but it doesn't move, have you done any work?
Yes, because you applied a force.
No, because the wall didn't move.
Yes, because you used energy.
It depends on how tired you feel.
# 6เลือกประเภท
Which of the following is NOT a form of energy?
Heat
Light
Force
Motion
# 7เลือกประเภท
What is the main source of energy for most living things?
Geothermal energy
Nuclear energy
Solar energy
Wind energy
# 8เลือกประเภท
If you drop a ball from a height, what happens to its potential energy as it falls?
It increases.
It decreases.
It stays the same.
It transforms into heat energy.
# 9เลือกประเภท
What is the unit of measurement for energy?
Watt
Newton
Meter
Joule
# 10เลือกประเภท
Which of the following is an example of kinetic energy?
A car parked on a hill
A compressed spring
A person running
A battery
# 11เลือกประเภท
A force of 20 Newtons is applied to an object, moving it 5 meters in the direction of the force. How much work is done?
4 Joules
10 Joules
100 Joules
400 Joules
# 12เลือกประเภท
If you lift a 2 kg book from the floor to a shelf that is 1.5 meters high, how much gravitational potential energy does the book gain? (Assume g = 9.8 m/s²)
2.94 Joules
29.4 Joules
294 Joules
14.7 Joules
# 13เลือกประเภท
A 1 kg ball is rolling at a speed of 4 m/s. What is its kinetic energy?
32 Joules
16 Joules
8 Joules
4 Joules
# 14เลือกประเภท
How much work is required to lift a 5 kg object 2 meters vertically? (Assume g = 9.8 m/s²)
98 Joules
196 Joules
10 Joules
49 Joules
# 15เลือกประเภท
f a machine does 500 Joules of work in 10 seconds, what is its power output?
50 Watts
500 Watts
5000 Watts
50000 Watts
# 16เลือกประเภท
A spring has a spring constant of 100 N/m. How much elastic potential energy is stored in the spring when it is compressed by 0.1 meters?
10 Joules
5 Joules
1 Joules
0.5 Joules
# 17เลือกประเภท
If you double the mass of an object while keeping its velocity constant, what happens to its kinetic energy?
It halves.
It doubles.
It quadruples.
It stays the same.
# 18เลือกประเภท
A force of 10 N is applied to an object, but it doesn't move. How much work is done?
0 Joules
10 Joules
100 Joules
Cannot be determined
# 19เลือกประเภท
Which of the following scenarios involves the conversion of potential energy to kinetic energy?
A car accelerating from rest.
A ball sitting on a table.
A roller coaster going down a hill.
A spring being compressed.
# 20เลือกประเภท
What distance is a book from the floor if the book contains 196 Joules of potential energy and has a mass of 5 kg (given g = 9.8 m/s2)?
4 m
40 m
5 m
50 m
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