Gravity, Freefall, Projectiles & Orbits

As distance between two objects increase the pull of gravity 

• Increases
• Decreases
• Stays the same

Tags

NGSS.HS-PS2-4

Two factors affecting the strength of gravity between 2 objects are...

• weight and mass

• distance and weight

• mass and matter

• mass and distance

Tags

NGSS.MS-PS2-4

A(n) _____ is the curved path of any object around any other object.

• orbit

• rotation

• revolution

• phase

Which model has greater gravitational attraction (if any)

• Model A

• Model B

• The same for both Model A and Model B

Which model has the greater gravitational attraction between the two objects (if any)?

• Model A

• Model B

• The same for both Model A and Model B

When an object is falling, how does the distance it falls change each second?

• It increases

• It decreases

• It doesn't

• There is no way to tell

When an object is accelerating due to the force of gravity and no other force it is:

• changing direction

• motionless

• in free fall

• at terminal speed

Tags

NGSS.HS-PS2-1

A ball is dropped from the roof of a tall building it reaches the ground in 3 seconds. What is its velocity upon impact?

• 9.8 m/s

• 19.6 m/s

• 29.4 m/s

• 30 m/s

Tags

NGSS.HS-PS2-1

Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

• the feather

• the metal bolt

• They would hit the ground at the same time.

• They would be suspended in a vacuum.

Tags

NGSS.HS-PS2-4

If a freely falling object were somehow equipped with a speedometer, its speed reading would increase each second by

• its rate depends on its initial speed

• about 15 m/s

• about 10 m/s

• about 5 m/s