A 1.5 kg cart and a 1 kg cart are sitting next to each other. The plunger of the 1.5 kg cart extends and pushes the carts apart. The 1 kg cart has a velocity of 2 m/s to the right.

Which is an example of an exothermic process?

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.