What is the formula for calculating work done?

W = F × d

Which of the following is the S.I. unit of work? A) Joule B) Newton C) Watt D) Meter

A) Joule

True or False: No work is done if a force is applied but there is no movement.

True

Riddle: I am the energy of motion, I increase with speed's devotion. What am I?

Kinetic energy

The energy stored in an object due to its position or shape is called ______.

Potential energy

What is the relationship between work and energy?

The work done on a body is stored as its energy.

Which type of energy is possessed by a body due to its motion?

Kinetic energy

Fill-in-the-blanks: The S.I. unit of power is ______.

Watt

When a bow is stretched, it possesses ______ energy.

Potential energy

True or False: The total mechanical energy remains constant if there is friction.

False. The total mechanical energy decreases due to friction.

What is the expression for gravitational potential energy?

P.E. = m × g × h

Which of the following factors does NOT affect the kinetic energy of a moving body? A) Mass B) Speed C) Shape D) Both A and B

C) Shape

Riddle: I can turn into light, heat, or sound with ease, I change forms but never cease. What am I?

Energy

Fill-in-the-blanks: The energy that is lost during transformation due to friction is called ______.

Degraded form of energy

What is the S.I. unit of kinetic energy?

Joule

True or False: Power is defined as the total work done over a period of time.

False. Power is defined as the rate of doing work.

The work done when a force of 1 newton moves a body by 1 metre is called ______.

One joule

Which of the following forms of energy can be converted into mechanical energy? A) Chemical energy B) Sound energy C) Light energy D) All of the above

D) All of the above

Riddle: I'm a spring that's been compressed tight, when released, I spring back with might. What am I?

Compressed spring (with potential energy)

Fill-in-the-blanks: The energy of a body due to its motion is called ______.

Kinetic energy

What is the relationship between power and time taken to do work?

Power increases when the same amount of work is done in less time.

True or False: The S.I. unit of work and energy are different.

False. The S.I. unit of work and energy is the same, which is joule.

The energy stored in water at a height in a dam is an example of ______ energy.

Potential energy

Which type of energy is involved when a stone is dropped from a height?

Kinetic energy

Fill-in-the-blanks: The formula for kinetic energy is ______.

K.E. = ½ m v²

Which of the following units is a larger unit of power? A) Watt B) Kilowatt C) Joule D) Newton

B) Kilowatt

True or False: Mechanical energy can be transformed into heat energy without any loss.

False. There is often some loss of energy in the form of heat.

Riddle: I am the force that keeps a body grounded, lift me up, and potential energy is founded. What am I?

Gravity

What happens to potential energy when an object falls?

It decreases and converts into kinetic energy.

Fill-in-the-blanks: The energy due to the height of an object is specifically called ______.

Gravitational potential energy

Which scientist is associated with the unit of work called joule?

James Prescott Joule

True or False: Electrical energy can be converted into sound energy.

True

Riddle: I flow in rivers and run through turbines, turning potential to kinetic, my energy shines. What am I?

Water (hydroelectric energy)

Fill-in-the-blanks: The rate of doing work is known as ______.

Power

What is the primary factor that affects the amount of work done?

The magnitude of the force applied and the distance moved in the direction of the force.

What are the two factors that affect the amount of work done by a force?

The magnitude of the force applied and the distance moved by the body in the direction of the force.

True or False: Kinetic energy is the energy possessed by a body due to its position.

False. Kinetic energy is the energy possessed by a body due to its motion.