A bike rider pedals with constant acceleration of 1.2 m/s^2 to reach a velocity of 7.5 m/s north. Find his initial velocity if the displacement was 19 m. Show all work please.

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

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.

Find the magnetic field a distance r from the center of a long wire that has radius a and carries a uniform current per unit area j in the positive z direction.