Calculate the gravitational force of 2 masses of 131 kg and 145 kg if they are 5.2 m apart. a. 4.7 * 10^-8 n b. 2.4 * 10^-7 n c. 4.1 *10^6 n d. 2.1 *10^7 n

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

If an astronaut takes an object to the moon the following is true (choose only one). a the mass will change but the weight will be the same. b both the mass and the weight of the object will be the same. c the weight will change but the mass will be the same. d both the mass and the weight of the object will change.