P1.3 Energy and Work

In the context of friction, what happens when you rub your hands together?

• They become warmer

• They become colder

• They become wet

• They become dry

Which of the following involves energy transfer from gravitational and kinetic to thermal due to friction?

• Meteorites burning up in the atmosphere

• Rubbing your hands together

• Brake pads in a car

• Ice melting in the sun

What is the force applied to pull the lorry in the given problem?

• 1000 N

• 2000 N

• 3000 N

• 4000 N

What does the "F" in FIFA stand for in the context of Physics Calculations?

• Formula

• Fine-tune

• Function

• Factor

What does the "A" in FIFA stand for in the context of Physics Calculations?

• Answer

• Analyze

• Approximate

• Apply

If the force was halved to 200 N but the distance remained 15m, what would be the work done?

• 3000 J

• 6000 J

• 2000 J

• 1000 J

Tyler bench presses 200N over a distance of 0.5m. Calculate the work done by his muscles.

• 100J

• 200J

• 50J

• 400J

Cayden weight lifts 150N. His muscles use 100J of energy. Calculate the distance the weight moved.

• 0.67m

• 1.5m

• 0.75m

• 1.0m

Nico bench presses 1.5kN using 3000J of energy. Calculate the distance moved by the weights.

• 2m

• 1m

• 3m

• 0.5m

What is the formula for calculating work done?

• Work = Force x Distance

• Work = Force / Distance

• Work = Force + Distance

• Work = Force - Distance