A 4kg rock is dropped from 5 m. There is no friction. A) What kind of energy does it have before?

B) What kind of energy does it have after?

C) Does the energy before equal to the energy after?

D) Was work done?

E) Put the above into The Law of Conservation of Energy.

F) Solve for the speed of the object that's at the bottom. (right after the rock drops)

Weak battery is considered to be a part of routine a. inspection b. wear and tear c. maintenance d. check

An empty bucket is placed under a faucet dripping at a constant rate of 4 milliliters per minute. with the given information, which of these statements is a reasonable conclusion? a there will be 24 milliliters of water in the bucket after 16 hour. b there will be 60 milliliters of water in the bucket after 14 hour. c there will be 160 milliliters of water in the bucket after 20 minutes. d there will be 100 milliliters of water in the bucket after 40 minutes.

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.