Show:
Force and Motion
Circular Motion
Gravity
Language of Physics
100
Force can be a ______ or a ______.
What is push or pull?
100

What is it called when an object rotates around another object?

What is an orbit?

100

This is a force that pulls objects toward the center of an object with mass.

What is gravity?

100

This is the variable for escape speed.

What is v_escape?

200
This is a change in the position of an object.
What is motion?
200

An object rotating around a point or other object always has a force pulling it to the center. What is the general name of this force?

What is centripetal force?

200

True or False: A tennis ball will fall faster than a ping pong ball.

False

200

This is the equation for the acceleration due to gravity.

What is g= M * G / r^2?

300
Force is measured in these units.
What are Newtons?
300

A rotating object always experiences a fictitious force pushing it away from the center of the circle. What is this force called? 

What is the centrifugal force?

300

True or False. Astronauts in the ISS experience no gravitational pull.

False.

300

A planet has a mass of 1 x 10^24 kg and a radius of 6 x 10^6 m. This is the acceleration due to gravity on this planet.

What is 1.85 m/s^2?

400

If you quickly swing a bucket of water around in a circle, the water stays put. What combination of forces keeps the water still?

What is gravity and centrifugal force?

400

What is the equation used to determine how fast an object needs to travel to escape its planet/orbit?

What is v = √(2*G*M / r)

400
This is the measurement of the amount of gravity on an object.
What is weight?
400

A planet has two times the mass of its moon but the same radius. This is the ratio of g between the planet and its moon.

What is 2 times? (The planet's g is 2 times larger than its moon's g) 

500

Neil Armstrong is back on the Moon, jumping and singing. When he makes it, he experiences gravity from this or these object(s). 

What is the Moon, the Earth, and the Sun?

500
Two rockets are trying to leave Earth. Rocket A has 4 times the mass of Rocket B. How many times larger is the escape speed for Rocket A versus Rocket B?

What is they have the same escape speed. The M in the equation is the Mass of the Earth (larger object).

500
Objects with different weights will hit the ground at the same time as long as there is no air stopping them. What causes them to do this?
What is gravitational pull?
500

What is the escape speed of a planet with 5.972 x 10^24 kg and a radius of 6.378 x 10^6 m? 

What is 11,176 m/s?