When air resistance exactly matches the downward force of gravity, a falling object stops accelerating and reaches ______________________.

• terminal velocity
• momentum
• mass
• inertia
• air resistance

An object at rest tends to remain at rest. This property is called ______________________.

• inertia
• momentum
• mass
• air resistance
• centripetal force

Only in a vacuum or in space can an object be in ______________________.

• free fall
• momentum
• mass
• inertia
• air resistance

Tags

NGSS.HS-ESS1-4

A car accelerating from 60 km/h to a constant speed of 80 km/h has increased its ______________________.

• momentum
• air resistance
• mass
• inertia
• centripetal force

Tags

NGSS.HS-PS2-1

The horizontal movement given to an arrow by a bow is one component of ______________________.

• projectile motion
• momentum
• mass
• inertia
• air resistance

Tags

NGSS.HS-PS2-2

If three balls of steel, rubber, and plastic were dropped at the same time from the same height, which would hit the ground first? (Assume there is no air resistance.)

• a. All would hit at the same time.
• b. The rubber ball would hit first.
• c. The steel ball would hit first.
• d. The plastic ball would hit first.

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A spacecraft orbiting Earth is both moving forward and

• a. at terminal velocity.
• b. in free fall.
• c. experiencing resistance.
• d. weightless.

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NGSS.HS-ESS1-4

NGSS.HS-PS2-1

Assuming 1 kg = 1,000 g, a 5 kg object has less inertia than an object with a mass of

• a. 4 kg.
• b. 6,000 g.
• c. 2 kg.
• d. 1,500 g.

Tags

NGSS.HS-PS2-1

Newton’s first law of motion states that a moving object, unless it is acted on by an unbalanced force, will

• a. remain in motion.
• b. eventually come to a stop.
• c. change its momentum.
• d. accelerate.

An astronaut uses a jet of nitrogen to maneuver in space. This can be done because of

• a. orbiting.
• b. free fall.
• c. momentum conservation.
• d. inertia.

Tags

NGSS.HS-PS2-2