You now know that force isn't the cause of constant motion. Constant motion happens by itself ... This time it looks like the gain in velocity each second is about twice that when pulled by one spring ...

This is due to Newton’s first law: object will continue at a constant ... Force is applied by the vehicle’s brakes in opposite direction to motion. The force of friction between tyres and ...

Using Newton's laws of motion and devices made from springs, astronauts on the International Space Station can measure their ...