2. A tennis ball is traveling at 50 m/s and has a kinetic energy of 75). Calculate the mass of the tennis ball.

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.

If a tank filled with water contains a block and the height of the water above point a within the block is 0.8 meter, what is the pressure at point a?

Diamond will scratch quartz. true or false