A 20 N force is applied to a block, causing it to move 3 m to the right. Calculate the work done on the block.
A 5 kg object is moving at a velocity of 2 m/s. Calculate its kinetic energy. A 20 N force is applied to a
A machine lifts a 100 kg load to a height of 5 m in 10 seconds. If the machine requires an input energy of 5000 J, calculate its efficiency. calculate its efficiency.