Calculate the kinetic energy of a charging elephant if its mass is 5,000kg and it moves at 8m/s

A 65-N box rest on a perfectly smooth surface. The minimum force needed to start the box moving is A) 65 N B) 6.5 N C) 650 N D) any horizontal force greater than zero

A young child is playing with a very flexible hose. She is moving her hand back and forth making transverse type waves.

Which electric component provides energy to the circuit of a flashlight?

Based on the law of conservation of energy, which statement is false? O A. Energy is lost when machines don't work right. B. We can't add more energy to the universe, OC. We can't destroy energy that exists in the universe. OD.

Un cuerpo se mueve a la derecha sobre una superficie horizontal áspera a una velocidad constante bajo la acción de una fuerza horizontal de 15 N. Determine: a) Modulo y dirección de la fuerza de roce

A 0.25 kg hockey puck is sliding along the ice with an initial velocity of 5 m/s when a player strikes it with his stick, causing it to reverse its direction and giving it a velocity of 30 m/s.

The physiological aim of drive reduction theory is

You are caring for a person who was involved in an automobile collision. The woman is complaining of pain in her abdomen, nausea and extreme thirst. She also is breathing rapidly. Which of the following would you suspect?

A fountain of water and steam that erupts from the ground

A heavy rope, 50 ft long, weighs 0.5 lb/ft and hangs over the edge of a building 120 ft high. how much work is done (in ft-lb) in pulling half the rope to the top of the building?