Checkpoint 4 Review

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s
• 40 m/s²
• -40 m/s²
• 40 m/s

Tags

NGSS.HS-PS2-1

A basketball was thrown with an initial velocity of 20 m/s at an angle above the horizontal. It remained in the air for 3 s. Which of the following quantities was constant while the basketball was in the air? (you do not have to calculate anything, think about what remains constant when any object is in motion.)

• acceleration

• position

• velocity

• displacement

What is the proper setup of the gravitational force formula?

• F_g= Gm²/d

• F=ma

• F_g= Gd²/(m₁+m₂)

• F_g= G (m₁m₂)/d²

Tags

NGSS.HS-PS2-4

Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog which are separated by 0.30 m.

• F_g = 3.7*10^-8 N

• F_g = 1.3*10¹² N

• F_g = 1.1*10⁵ N

• F_g = 7.2*10^-7 N

Tags

NGSS.HS-PS2-4

If two projectiles are launched at two different heights, 2m and 10m, which one will reach the ground first?

• 2m

• 10m

• they both will hit the ground at the same time

Tags

NGSS.HS-PS2-4

A student is attempting to hit a target 5 m from the edge of a desk that is 1.5 m tall. The marble rolls off a table horizontally as shown in the picture. According to the diagram and information provided, what velocity must the marble have to strike the target? Round to the hundredths.

• 2.34 m/s

• 3.30 m.s

• 16.13 m/s

• 0.55 m/s

What is the distance from Jupiter to Mars if the mass of Jupiter is 1.898 X 10^7 and the mass of Mars is 6.42 X 10^23 kg, while the gravitational force between Jupiter and Mars is 2.65 X 10^17 N. Round to the hundredths place.

• 8.13 x 10^19 m

• 5.54 X 10^1 m

• 6.75 X 10^7 m

• 7.55 X 10^6 m

Tags

NGSS.HS-PS2-4

When two asteroids move towards each other and gravity is the only force acting on them, what will happen?

• The acceleration remains constant until the asteroids collide.

• The acceleration will increase until the asteroids collide.

• There is no acceleration, the asteroids will move toward each other at constant velocity.

• The acceleration will decrease until the asteroids collide.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

True or False: When a spaceship lifts off from Earth and goes into space, it goes into orbit around Earth and the weight of an astronaut is not zero.

• True

• False

Tags

NGSS.HS-ESS1-4

NGSS.HS-PS2-4

True or False: As an astronaut is coming down from spce their gravitational pull will decrease.

• True

• False it will increase

Tags

NGSS.HS-PS2-4