A pitcher throws a baseball at 45 m/s. The baseball has a mass of 400 grams. Disregarding air resistance, the baseball's momentum when it hits the catcher's mitt is a0 kg*m/s.

Why do copper vessels turn green with the passage of time?

The water in the plumbing in a house is at a gauge pressure of 350,000 pa. what force does this cause on the top of the tank inside a water heater if the area of the top is 0.9 m2? (ignore atmospheric pressure.)

Is there a relationship between the sign of velocity and the sign of acceleration that would indicate whether an object is speeding up or slowing down? Explain this relationship.

What kind of material has a high resistivity and prevents the movement of electrons? A. A battery B. A conductor C. An insulator D. A wire

If your dream is to be a soccer player. You got skills and one day it was your time to go to a another country but your family didn't want you to leave. You just lose a chance to play for one of the greated teams on Spain. What can you do?

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?

How did Einstein's and Newton's theories differ in terms of explaining the cause of gravity?

A sled being dragged to the right across loosely packed snow with a rightward acceleration

Imagine two artificial satellites orbiting earth at the same distance. one satellite has a greater mass then the other one which of the following would be true about there motion? 1.

What is energy? (Not the answer from google search.)