An object accelerates from rest with a constant acceleration of 7.5 m/s2. How fast will it be traveling after it goes 21 m?

What are the differences and similarities of a compression wave and a transverse wave?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

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.