KINETICS OF PARTICLES (WORK ENERGY METHOD)

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Test your knowledge on the work-energy method in particle kinetics!

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Vanell

Malaysia

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KINETICS OF PARTICLES (WORK ENERGY METHOD)Version en ligne Test your knowledge on the work-energy method in particle kinetics! par Vanell 1 What does the work-energy principle state? a The force acting on a particle equals its mass times acceleration. b The work done on a particle equals its change in kinetic energy. c Momentum is conserved in elastic collisions. d Energy is conserved in all interactions. 2 What type of energy is converted to kinetic energy in the work-energy method? a Thermal energy. b Potential energy only. c Work done by external forces. d Chemical energy. 3 What is the work done by a constant force? a W = F + d b W = Fd cos(θ) c W = Fd sin(θ) d W = Fd 4 When is the work-energy principle most useful? a When forces are variable. b When analyzing motion without knowing forces. c When energy losses are negligible. d In rotational dynamics. 5 What happens to kinetic energy if work done is negative? a Kinetic energy decreases. b Kinetic energy becomes zero. c Kinetic energy remains constant. d Kinetic energy increases. 6 What is the effect of friction on the work-energy method? a It has no effect on work. b It increases kinetic energy. c It reduces the total work done on the system. d It only affects potential energy. 7 A 5 kg block is pushed along a frictionless horizontal surface by a constant force of 20 N over a distance of 4 m. What is the final kinetic energy of the block? a 20 J b 80 J c 100 J d 200 J 8 The work done by all forces on a particle of mass 2 kg is 50 J. If the particle started from rest, what is its final speed? Choose one or more answers a 5 m/s b 7.07 m/s c 10 m/s d 15 m/s

KINETICS OF PARTICLES (WORK ENERGY METHOD)Version en ligne

Test your knowledge on the work-energy method in particle kinetics!

par Vanell

What does the work-energy principle state?

The force acting on a particle equals its mass times acceleration.

The work done on a particle equals its change in kinetic energy.

Momentum is conserved in elastic collisions.

Energy is conserved in all interactions.

What type of energy is converted to kinetic energy in the work-energy method?

Thermal energy.

Potential energy only.

Work done by external forces.

Chemical energy.

What is the work done by a constant force?

W = F + d

W = Fd cos(θ)

W = Fd sin(θ)

W = Fd

When is the work-energy principle most useful?

When forces are variable.

When analyzing motion without knowing forces.

When energy losses are negligible.

In rotational dynamics.

What happens to kinetic energy if work done is negative?

Kinetic energy decreases.

Kinetic energy becomes zero.

Kinetic energy remains constant.

Kinetic energy increases.

What is the effect of friction on the work-energy method?

It has no effect on work.

It increases kinetic energy.

It reduces the total work done on the system.

It only affects potential energy.

A 5 kg block is pushed along a frictionless horizontal surface by a constant force of 20 N over a distance of 4 m. What is the final kinetic energy of the block?

20 J

80 J

100 J

200 J

The work done by all forces on a particle of mass 2 kg is 50 J. If the particle started from rest, what is its final speed?

Choose one or more answers

5 m/s

7.07 m/s

10 m/s

15 m/s

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KINETICS OF PARTICLES (WORK ENERGY METHOD)

Test

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

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KINETICS OF PARTICLES (WORK ENERGY METHOD)Version en ligne

par Vanell

What does the work-energy principle state?

What type of energy is converted to kinetic energy in the work-energy method?

What is the work done by a constant force?

When is the work-energy principle most useful?

What happens to kinetic energy if work done is negative?

What is the effect of friction on the work-energy method?

A 5 kg block is pushed along a frictionless horizontal surface by a constant force of 20 N over a distance of 4 m. What is the final kinetic energy of the block?

The work done by all forces on a particle of mass 2 kg is 50 J. If the particle started from rest, what is its final speed?

Choose one or more answers

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