Aball is thrown vertically upward (assumed to be the positive direction) with a speed of 24.0 m/s from a height of 3.0 m. (a) how high does the ball rise from its original position? 29.38 correct: your answer is correct. m (b) how long does it take to reach its highest point? 2.44 correct: your answer is correct. s (c) how long does the ball take to hit the ground after it reaches its highest point? 2.44 incorrect: your answer is incorrect. s (d) what is the ball's velocity when it returns to the level from which it started?

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.

Amachinist turns the power on to a grinding wheel, at rest, at time t = 0 s. the wheel accelerates uniformly for 10 s and reaches the operating angular velocity of 96 rad/s. the wheel is run at that angular velocity for 40 s and then power is shut off. the wheel slows down uniformly at 1.5 rad/s2 until the wheel stops. in this situation, the time interval of deceleration is closest to:

The researcher who studied the ability of cats to learn to escape from puzzle boxes was