I throw a ball of mass 2kg straight up in the air with a speed of 5 m/s. at the top of the balls arc, how much potential energy does it have? a. 10 J
b. 50 J
c. 0 J
d. 25 J

Ascrew incorporates which other simple machine? lever wheel and axle inclined plane pulley

The image shows a pendulum in simple harmonic motion the pendulum starts at a and swing to e

The rocket is fired vertically and tracked by the radar station shown. when θ reaches 66°, other corresponding measurements give the values r = 32700 ft, r¨ = 85 ft/sec2, and θ˙ = 0.019 rad/sec. calculate the magnitudes of the velocity and acceleration of the rocket at this position.