Which of the following is used to calculate the velocity of two moving freight cars, after they collide and move together, given the initial masses and velocities of the freight cars?

What is the rate of change in a objects position?

Examples of states of consciousness include a. daydreaming b. dreaming during sleep c. hypnosis d. all of the above

Aturntable that spins at a constant 74.0 rpm takes 3.10 s to reach this angular speed after it is turned on. find its angular acceleration (in rad/s2), assuming it to be constant, and the number of degrees it turns through while speeding up.