Physics Quiz

What constitutes a system in physics?

• An isolated object only

• An object or group of objects

When a vehicle slows down, what type of energy transfer occurs?

• Kinetic energy to sound energy

• Kinetic energy to thermal energy due to friction

What is the formula for calculating kinetic energy?

• Ek = ½mv²

• Ek = mgh

In the formula for kinetic energy, what does "v" represent?

• Velocity in m/s

• Volume in liters

How is elastic potential energy calculated?

• Ee = ½ke²

• Ee = mgh

In the formula for elastic potential energy, what does "k" represent?

• Spring constant in N/m

• Kinetic energy in J

What is the formula for gravitational potential energy?

• Ep = ½mv²

• Ep = mgh

What is the value of gravitational field strength "g" on Earth?

• 9.8 m/s²

• 10.8 m/s²

What does specific heat capacity measure?

• The total energy in a system

• The energy required to raise the temperature of 1 kg of a substance by 1°C

What is the formula for calculating power?

• Power = energy transferred / time

• Power = mass × velocity