g Dropping a one-kilogram ball from a 3m height, vertically, the ball hits the floor with a speed of 18 m/s. If the ball rebounds with an initial speed of 8 m/s after 30 ms, calculate:

A150 w lamp emits light of wavelength 590 nm uniformly in all directions. what is the photon flux (photons per unit area per unit time) on a small screen at a distance 2.3 m from the lamp? assume the photons are uniformly distributed over the surface of a sphere of radius 2.3 m.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

Substances that assume the shape of their container, but do not have a definite size are called