Eexplore the behavior of two masses which collide elastically in order to investigate the properties of a perfectly elastic collision. Start by familiarizing yourself with the controls of the simulation. For this simulation you can adjust the mass of the first object m1, the velocity of the first object v1, the mass of the second object m2 and the velocity of the second object v2. Required:
a. What about the collision is the same each time you run the simulation?
b. What about the collision is different each time you run the simulation?

Scout feels ill one day before school. her mother puts a thermometer in her mouth and the temperature begins to climb to 100°f. what is happening between the cooler thermometer and scout's body? a) scout's body is applying a force to the particles in the thermometer. b) kinetic energy is being transferred from her mouth to the thermometer. c) potential energy is being lost by the thermometer and gained by scout's body. d) the potential energy stored in foods is converted to mechanical energy to raise the mercury in the thermometer.

Aperson gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. the cart travels forward along the floor, gradually slowing as it moves. consider the horizontal force(s) on the cart while it is moving forward and slowing. which of the following statements is correct? (a) both a forward and a backward force are acting on the cart, but the forward force is larger. (b) only a forward force is acting which diminishes with time. (c) both a forward and a backward force are acting on the cart, but the backward force is larger. (d) only a backward force is acting, no forward force.

What are the necessary conditions for fusion?