What is the scientific definition of work?

• Force × Displacement

• Force + Displacement

• Force - Displacement

• Force / Displacement

What is the unit of work?

• Pascal

• Joule

• Newton

• Watt

Which of the following is a condition for work to be done?

• No displacement

• Force is zero

• Displacement in the direction of force

• Force applied at an angle of 90 degrees

What is the formula for kinetic energy?

• KE = (1/2)mv^2

• KE = F × s

• KE = mgh

• KE = mv

What does potential energy depend on?

• Speed of the object

• Mass and height

• Force applied

• Time taken

What is the work-energy theorem?

• Work done is equal to energy consumed

• Work done is equal to force times distance

• Work done is equal to change in kinetic energy

• Work done is equal to change in potential energy

What is the formula for gravitational potential energy?

• PE = F × d

• PE = mv^2

• PE = mgh

• PE = (1/2)kx^2

What is the SI unit of energy?

• Joule

• Newton

• Watt

• Kilowatt

What is the definition of power?

• Force applied over distance

• Rate of doing work

• Energy consumed over time

• Work done per unit mass

How is power calculated in terms of work?

• P = W × t

• P = W / t

• P = W + t

• P = W - t