A cyclist applies the brakes on her bicycle with a force of -75.0 N. As a result, the bicycle comes to rest after traveling 11.0 m with the brakes applied. How
much work is done by the brakes?
A. -825 J
B. 6.82 N·m
C. 825 J
D. -75.0 N

Acatapult is tested by roman legionnaires. they tabulate the results in a papyrus and 2000 years later the archaeological team reads (distances translated into modern units): range = 0.4 km; angle of launch = π/5 rad; landing height = launch height. what is the initial velocity of launch of the boulders if air resistance is negligible?

What type of light does this light bulb produce most (i.e. at what wavelength does the spectrum have maximum intensity)?

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.