An observer accurately measures the constant velocity of a car from her frame of reference. Another observer measures the constant velocity of the car from his frame of reference. If the two frames of reference are at rest with respect to each other, how will the velocity measurements compare?

If this plastic cup is heated to its melting point, what will eventually happen to all the particles in the plastic? a. the particles will begin to move enough that they slide past each other. b. bonds will form and the liquid will become a solid. c. the spaces between the particles will get smaller. d. the particles will change state and become a crystalline solid.

Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?

Ametal ball with a mass of 0.028 kg is dropped from rest at a height of 1.0 meters above the ground. assuming the energy in the ball is conserved, how much kinetic energy will the ball have when it is 0.5 meters above the ground?