four students are each given an identical resistor and asked to find its resistance. they each measure the potential difference across the resistor and the current in it.

The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed

Astudent looks at ocean waves coming into the beach. an ocean wave with more energy will a) have a greater height. b) have a greater period. c) travel toward the beach faster. d) strike the beach with greater frequency.

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?