Exam 3: Gravity and Orbitsa Celestial Ballet

Mass and weight are different names for the same physical property of matter.

Name the two ways in which an object's motion (meaning its velocity)can experience a nonzero acceleration.

Once two objects are far enough away from each other,they no longer exert any gravitational attraction on each other.

Suppose you are suddenly transported to a planet with 1/4 the mass of Earth but the same radius as the Earth.Your weight would __________ by a factor of __________.

If a 100-kg asteroid collides with Earth,causing the asteroid to decelerate in one second from 1,000 m/s to 0 m/s,what acceleration will Earth experience according to Newton's third law? (Earth has a mass of approximately . )

Which of the following properties of an astronaut changes when he/she is standing on the Moon,relative to when the astronaut is standing on Earth?

The force of gravity that an object has is directly related to its

Johannes Kepler obtained accurate data on the positions of the planets in the sky over time,which Galileo used to prove that planets revolved around the Sun.