Gravitational Test

Two football players sitting next to each other exert a gravitational force, F on each other. They remove their pads, so that the mass of each player becomes one-half of his original value. Which of the following represents the present gravitational force between the players?

• F/4

• F/16

• F/2

• F/8

Tags

NGSS.MS-PS2-4

Two pickup trucks each have a mass of 2,000kg. The gravitational force between the trucks is 3.00x10-5 . One pickup truck is then loaded with 1,000kg of bricks. What is the new gravitational force between the two trucks?

• 2.00x10^-5 N
• 5.00x10^-5 N
• 4.50x10^-5 N
• 3.00x10^-5 N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

Who first put forth the heliocentric model of the solar system?

• Nicolaus Copernicus
• Johannes Kepler
• Isaac Newton
• Galileo Galilei

Which of the following choices describes the Chronological Order of scientist who contributed to the understanding of the concepts of gravity?

• Cavendish,Aristotle, Newton, Einstein

• Aristotle, Newton, Cavendish, Einstein

• Aristotle, Cavendish, Newton, Einstein

• Einstein, Aristotle, Cavendish, Newton

What was Newton's contribution to gravity

• He sailed to the edge of the world

• He discovered the laws of planetary motion

• He proved that the Sun revolved around the Earth

• He derived/discovered the Universal Law of Gravitation

What is the attraction due to gravity of the Moon on the Earth?

-The mass of the moon is 7.36x10^22 

The distance is 3.84x10^8

The mass of the Earth is 5.98x10^24  

G=6.67x10^-11

• 1.99x10^20

• 16.9x10^55

• 0N

• 11.5x10^38

Tags

NGSS.5-PS2-1

Who discovered the three laws of planetary motion?

• Johannes Kepler
• Galileo Galilei
• Bill Nye the Science Guy

• Isaac Newton

Tags

NGSS.MS-PS2-4

Who experimentally determined the value for G, the gravitational constant?

• Puff Daddy

• Isaac Newton
• Albert Einstein
• Henry Cavendish

What is the force of gravity in Newtons between two asteroids?

-Asteriod A mass is 1,211,748kg

-Asteriod B mass is 767,007kg

Distance 88meters

G=6.67x10^-11

• 1.20 x 10^-5 N
• 8.005x10^-3 N

• 5.00 x 10^-6 N
• 9.81 x 10^-6 N

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

Who describes gravity as a warping of time and space?

• Albert Einstein
• Stephen Hawking
• Galileo Galilei
• Isaac Newton