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Work and Energy

AjPuypui
41
ปัญหาที่เพิ่มเข้ามา (20/ 20)
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public quiz

ปัญหา 1

เลือกประเภท

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.

ปัญหา 2

เลือกประเภท

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

ปัญหา 3

เลือกประเภท

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

ปัญหา 4

เลือกประเภท

What is the formula for calculating work?

  • Work = Power x Time
  • Work = Energy / Time
  • Work = Mass x Velocity
  • Work = Force x Distance

ปัญหา 5

เลือกประเภท

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.

ปัญหา 6

เลือกประเภท

Which of the following is NOT a form of energy?

  • Heat
  • Light
  • Force
  • Motion

ปัญหา 7

เลือกประเภท

What is the main source of energy for most living things?

  • Geothermal energy
  • Nuclear energy
  • Solar energy
  • Wind energy

ปัญหา 8

เลือกประเภท

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.

ปัญหา 9

เลือกประเภท

What is the unit of measurement for energy?

  • Watt
  • Newton
  • Meter
  • Joule

ปัญหา 10

เลือกประเภท

Which of the following is an example of kinetic energy?

  • A car parked on a hill
  • A compressed spring
  • A person running
  • A battery

ปัญหา 11

เลือกประเภท

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

ปัญหา 12

เลือกประเภท

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

ปัญหา 13

เลือกประเภท

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

ปัญหา 14

เลือกประเภท

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

ปัญหา 15

เลือกประเภท

f a machine does 500 Joules of work in 10 seconds, what is its power output?

  • 50 Watts
  • 500 Watts
  • 5000 Watts
  • 50000 Watts

ปัญหา 16

เลือกประเภท

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

ปัญหา 17

เลือกประเภท

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.

ปัญหา 18

เลือกประเภท

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

ปัญหา 19

เลือกประเภท

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.

ปัญหา 20

เลือกประเภท

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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