Physics Quiz

What is the unit of force?

• Joule

• Newton

• Pascal

• Watt

If an object is moving at a constant speed in a circular path, what type of acceleration does it experience?

• Linear acceleration

• Centripetal acceleration

• Angular acceleration

• No acceleration

What is the formula for calculating work done?

• Work = Force × Distance

• Work = Mass × Acceleration

• Work = Power × Time

• Work = Energy × Time

A car accelerates from rest to a speed of 20 m/s in 5 seconds. What is its acceleration?

• 2 m/s²

• 4 m/s²

• 5 m/s²

• 10 m/s²

Which of the following quantities is a vector?

• Speed

• Distance

• Velocity

• Mass

What is the law of conservation of energy?

• Energy can be created and destroyed.

• Energy can be transformed from one form to another but cannot be created or destroyed.

• Energy can only be stored.

• Energy is always lost in transformations.

If a 1000 kg car is moving at a speed of 15 m/s, what is its kinetic energy? (Use KE = 0.5mv².)

• 112500 J

• 7500 J

• 225000 J

• 15000 J

Which of the following is NOT a form of energy?

• Kinetic energy

• Potential energy

• Thermal energy

• Speed

The efficiency of a machine is defined as the ratio of useful output energy to total input energy multiplied by what?

• 100%

• 1000%

• 10%

• 1%

What type of energy does an object possess due to its position?

• Kinetic energy

• Thermal energy

• Potential energy

• Chemical energy