Grade 12 Physics: Work and Energy

Stay with one question long enough to think for yourself.

Inside the course

A glimpse of the questions.

Question 01

A mover pushes a sofa across the floor of a van. The mover applies a force of 475 N horizontally, moving the sofa 1.2 m. Calculate the work done on the sofa by the mover.

Question 02

A 0.3 kg soccer ball is dropped from the top of a 10 m building and strikes the ground with a speed of 12 m/s. Using the conservation of energy, calculate the energy lost due to air resistance.

Question 03

A 60 kg diver jumps from a 10 m high diving board. Calculate the change in the diver's gravitational potential energy from the top of the board to the water surface.