How do i solve this? , ! a cyclist rode at an average speed of 10 mph for 15 miles. how long was the ride? 1.5 hours 10 hours 15 hours 150 hours

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

As the distance from a magnet increases, what happens to the magnet force?

Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above