Recent content by savaphysics

There is no KE lost right? Since they collided and there is no external forces.

Homework Statement Determine the fractional decrease in total kinetic energy of each set of asteroids when they collide. If the average specific heat of the material composing the asteroids is assumed to be that of ice (2.05 kJ/kg·˚C), by how much does the temperature of the asteroids rise...

thanks that really helped...

Homework Statement You are riding in a car that crashes into a solid wall. The car comes to a complete stop without bouncing back. The car has a mass of 1500 kg and has a speed of 30 m/s before the crash. (this is about 65 mi/hr). What is the net impulse that acts on the car to bring it to...

Homework Statement You are riding in a car that crashes into a solid wall. The car comes to a complete stop without bouncing back. The car has a mass of 1500 kg and has a speed of 30 m/s before the crash. What is the car’s initial momentum? What is your initial momentum? (Recall that the...