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Formula of work

• Fs

• ma

• J

• g

SI Unit of work

• NM

• nm^2

• J

• none of these

work is a

• Scalar quantity

• vector quantity

• both a & b

• none

Two conditions of work done

Two conditions of work done

Total Energy E_T =

• Ep + Ek

• Mass / Area

• w/t

• none of these

What is the formula for kinetic energy?

• mass * velocity^2

• 1/2 * mass * velocity

• mass + velocity^2

• 1/2 * mass * velocity^2

Define potential energy.

• Energy due to temperature

• Energy due to color

• Energy due to position or state

• Energy due to motion

A force of 20 N is applied to move an object 5 meters. Calculate the work done.

• 100 J

• 50 J

• 200 J

• 10 J

What is the kinetic energy of an object with a mass of 8 kg and a velocity of 6 m/s?

• 72 J

• 100 J

• 144 J

• 48 J