Ten questions. The result tells you which lessons you may skip.
A book rests on a table. Which is the complete description of one of the forces on the book?
A block rests on a ramp inclined at \(30°\). The normal force on the block is
A spring stretches by \(2\,\text{cm}\) under a force of \(5\,\text{N}\). Under a force of \(15\,\text{N}\) it stretches by
A puck slides on perfectly smooth ice with no air resistance. To keep it moving at a steady \(4\,\text{m/s}\) it needs
A car goes round a roundabout at a constant speed of \(30\,\text{km/h}\). The net force on it is
A net force of \(20\,\text{N}\) acts on a body of mass \(5\,\text{kg}\). Its acceleration is
A stone thrown straight up is still rising. Air resistance is neglected. Its acceleration is
A ball is in flight after leaving a bowler's hand. Air resistance is neglected. The forces on it are
A book rests on a table. The third-law partner of the book's weight is
A \(2\,\text{kg}\) block on a smooth floor is pulled by a rope with \(10\,\text{N}\) at \(37°\) above the horizontal (\(\sin 37° = 0.6\), \(g = 10\,\text{m/s}^2\)). The normal force of the floor is