Starting from rest, a boat speeds up, covering 20.0
m in a time of 4.0 s.

In 4 seconds what is the m/s

The 5-kg cylinder is initially at rest when it is placed in contact with the wall b and the rotor at a. if the rotor always maintains a constant clockwise angular velocity v = 6 rad> s, determine the initial angular acceleration of the cylinder. the coefficient of kinetic friction at the contacting surfaces b and c is mk = 0.2.

Why do astronauts in the space shuttle weigh less?

How are positive ions different from neutral atoms