a 25 kg object falls off a cliff and hits the ground 10 seconds later. How much force does the object apply to the ground on impact?

Chemical energy is a form of energy. a. heat b. kinetic c. potential d. electromagnetic

An alien spaceship is 500 m above the ground and moving at a constant velocity of 150 m/s upwards. how high above the ground is the ship after 5 seconds?

Jenny wants to test the electrical conductivity of two substances dissolved in water. she is preparing the containers for the experiment. which factor is most important for her to control? a) volumes of the solutions b) appearance of the solutions c) temperatures of the solutions d) concentrations of the solutions