If the slope of a line on a speed-time graph is 0 and it is not on the x-axis, what is the object doing?

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

Select the three ways that the parallel-plate capacitor differs from a car battery.

Agirl throws a ball. if the ball's acceleration is 12 m/sec/sec and its mass is 0.5 kg, how much force did the girl apply to the ball?