Tom and Jerry pass each other in the hallway. Tom has a mass of 65 kg, and Jerry has a mass of 55 kg. If the center of mass of the two students is 1.00 m, then what is the force acting on Tom?

• 2.4 x 10^-7 N

• 2.1 x 10^-7 N

• 3.4 x 10^-7 N

• 2.9 x 10^-7 N

Tags

NGSS.HS-PS2-1

Calculate the acceleration due to gravity on The moon. Radius is 1,740,000 m. And mass of the moon is 7.35 x 10²² kg

• 1.6 m/s²

• 2.1 m/s²

• 1.2 m/s²

• 3.3 m/s²

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Calculate the acceleration due to gravity on Mars. Radius is 3,400,000 m. And mass of the moon is 6.42 x 10²³ kg

• 1.6 m/s²

• 3.4 m/s²

• 3.7 m/s²

• 4.1 m/s²

Calculate the acceleration of gravity on the planet Neptune. It has a mass of 1.02 x 10²⁶ kg and a radius of 25,000,000 m

• 9 m/s²

• 10 m/s²

• 11 m/s²

• 12 m/s²

Tags

NGSS.HS-PS2-4

When on the surface of a planet, Jenny experiences and acceleration of gravity of 20. m/s². If she rode a space elevator doubling her distance from the center of the planet, her acceleration due to gravity would now be...

• 10 m/s²

• 20 m/s²

• 5 m/s²

• 2.5 m/s²

If the acceleration due to gravity on a planet is 5.0 m/s², then what would be the weight of a 40. kg person?

• 40 N

• 200 N

• 20 N

• 8 N

A force of F acts between two objects of equal mass. If the distance between each (center-to-center) is doubled, then the force will...

• double

• increase 4 times

• halve (1/2)

• decrease to 1/4th

A 10 kg mass and a 5 kg mass are separated by 2.0 meters. The object that feels a greater gravitational pull is...

• The 10 kg mass

• The 5 kg mass

• Both feel the same force

• Depends if they are moving

Tags

NGSS.HS-PS2-4

How far from the surface of the Earth does an astronaut need to go to not experience the force of gravity from the earth?

• An astronaut will always experience a force of gravity.

• An altitude of 100 miles

• An altitude of 200 miles

• Any distance above the atmosphere, as long as they are in freefall.

What two planets are visible together above the horizon in the evening looking West in March of 2018?

• Mercury

• Venus

• Jupiter

• Saturn