How much force is needed to stop an 80-kg football player if he decelerates at 5 m/s2? 5 n 16 n 20 n 400 n

Which wave is the result of amplification and produces a louder sound

When solid surfaces slide over each other the kind of friction that occurs is called friction

The basketball coach tells his team to run sprints back and forth across the court, which is 30 m long. they start at the left end of the court, run back and forth 6 times, then end back at the left end of the court where they began. what distance did they run? what is their displacement?