Two balls are at the same height and released at the same time. One ball is dropped and hits the ground 5 s later. The other initially moves horizontally. When does the second ball hit the ground?

What does the electron do in an atom?

What is the velocity of a rocket that goes 700 km north in 25 seconds?

What is the main difference between weight and mass? A. Weight is dependent on gravity, and mass is not. B. There is no difference between weight and mass. C. Weight is measured in grams, and mass is measured in pounds. D.

A force of 14 N acts on a 5 kg object for 3 seconds. a. What is the object's change in momentum? b. What is the object's change in velocity?

According to quantum mechanics the motions of subatomic particles may be described as

Explain how atoms are aligned in a magnet in terms of the North and South poles.

Which of the following has the largest gravitational potential energy A. a 10kg dog running down the street at 30mph B. a tightrope walker slowly crossing niagara falls C. a 0.02kg bullet moving down the barrel at 800mph D.

Why does the speed of an object change when a force acts on it?

What are factors that would change the position of the wave lengths measured? (There are more than one answer.) a) size of the tube b) tuning fork frequency c) distance between the tuning fork and tube d) room temperature e) area of the tube

This particle is found in the nucleus and adds mass to the nucleus, but changing its number does not change what the element is. This particle is the A. proton. B. photon. C. neutron. D. electron.