Aboy is inning with a kinetic energy of 810j. if the boy has a mass of 80kg. what is his speed ?

How will each of the following changes in demand and/or supply affect equilibrium price and equilibrium quantity in a competitive market; that is, do price and quantity increase or decrease, or are the answers indeterminate because they depend on the magnitudes of the shifts?

Write short note on the following ; collision theory, rotation angle and angular velocity, centripetal acceleration, coriolis force, and newton's law of gravitation.

Pls pls pls pls ! describe, in your own words, how you found the epicenter of the earthquake.