A mass of 100 g falls 5 m from rest and stops after penetrating a distance of 0.5 m in sand. Show that the
force exerted on it by the sand is 11 N.

Who was the first scientist to measure speed as distance over time?

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?

Aplane flying horizontally at an altitude of 1 mile and a speed of of 500mih passes directly over a radar station. find the rate at which the distance from the plane to the station is increasing when it is 2mi away from the station.