A rock is dropped from a bridge to the water below. It takes 3.2 s for the rock to hit the water. Find the speed (in m/s) of the rock as it hits the water. How high (in m) is the bridge above the water

An element is a substance that cannot be broken down chemically into electrons. another substance. o C. atoms. OD. protons.

What is the impulse / change in momentum of a 1.0 kg clay ball that is accelerated from rest to m/s?

Is the earth flat, and do we have a shield around the earth?

Describe 4 local effects of valcanic eruption

What group is helium in? Group 2 or group 8?

3. Calculate the amount of current through a 45-watt light bulb that is connected to a 120-volt circuit in your home.

Are oranges called oranges because oranges are orange, or is orange called orange because oranges are orange?

An object at rest has no net force acting on it. a. True b. False

A baseball has mass 0.145 kg. (a) If the velocity of a pitched ball has a magnitude of and the batted ball's velocity is in the opposite direction, find the magnitude of the change in momentum of the ball and of the impulse applied to it by the bat.

A long distance runner has an average speed of 4m/s during a race. How far does the runner travel in 20 minutes?