Pushing a stalled car, lifting a crate, dragging a sledge: whenever a force shifts something along its own direction, it does work, and that work is exactly the energy it hands over. No movement in the direction of the force means no work, no matter how hard you push.
Work done = force × distance moved in the direction of the force: W = Fd, measured in joules. The work done is equal to the energy transferred. The force must act along the direction of motion for it to do work.
Work done is the force multiplied by the distance moved in the direction of the force.
The work done by a force is equal to the energy transferred.
Set the force and the distance, then push the load. The work done, shown as the shaded area, is the force multiplied by the distance moved in the direction of that force.
Four quick checks on W = Fd, its unit, and the energy link. Each correct answer earns XP and lights this skill on your star map.
Work done is calculated as...
Work done is measured in...
The work done by a force is equal to...
If a force acts at right angles to the motion, the work it does is...
The defining equation:
A 25 N force drags a crate 6.0 m across the floor in the direction of the force. Find the work done.
A force at right angles to the motion does no work. When you carry a bag along a level floor, the upward force you apply is vertical while the motion is horizontal, so that force transfers no energy. Only a force with a component along the direction of motion does work.
Unlocks once the four checks above are done. Worth more XP, written in the style of Paper 2.
A force of 20 N pushes a box 3.0 m in the direction of the force. The work done is...
A crane does 4000 J of work lifting a load through 8.0 m. The lifting force is...
A waiter carries a tray horizontally across a level room at steady speed. The work done by the upward force supporting the tray is...
This skill is now lit gold on your star map. Keep the chain going.