Physics Final Exam

When a projectile reaches the peak of its trajectory, what is the direction of the vertical component of its velocity?

• Upward

• There is no vertical velocity at the peak.

• Downward

• It is zero throughout the projectile’s motion.

A stone is thrown horizontally from a 2-meter-high cliff at 25.0 m/s and lands 50.0 meters away. How long was the stone in the air?

• 2.00 s

• 3.50 s

• 1.56 s

• 4.00 s

Tags

NGSS.HS-PS2-1

Two objects have masses of 400 kg and 700 kg, and are 20 meters apart. What is the gravitational force between the two objects? (G = 6.67 x 10⁻¹¹ N·m²/kg²)

• 2.7551 x 10⁻³ N

• 4.67 x 10⁻⁸ N

• 1.63 x 10⁴ N

• 1.84 x 10⁻⁷ N

Tags

NGSS.HS-PS2-4

According to the law of the conservation of momentum, the momentum before a collision should be ________ the momentum after.

• double

• half

• equal to

• 1/4

Tags

NGSS.HS-PS2-2

According to Newton's Third Law, for every action, there is an equal and opposite:

• Reaction

• Force

• Motion

• Inertia

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DOK Level 1: Recall

What is the mass of an antineutron in kilograms?

• -1.67 x 10 ^-27 kg

• 1.67 x 10 ^-27 kg

• +1 u

• -1 u

Tags

NGSS.HS-PS1-8

Two trains are locked together after a collision and are moving with the same velocity after colliding. Which type of collision is this?

• Elastic

• Rebound

• Permanent

• Inelastic

Tags

NGSS.HS-PS2-2

What will happen when these two waves meet?

• The amplitude will be zero.

• The amplitude will increase.

• The waves cancel each other out.

• Nothing will happen.

Tags

NGSS.HS-PS4-1

When is the acceleration zero?

• 1-5 s

• 5-8 s

• 14-19 s

• 13-14 s

• 19-20 s

Which of the following demonstrates acceleration?

• A bike moving at 20 km/h, then slowing down to 15 km/h.

• A bike moves at a constant speed of 25 km/h.

• A bike speeds up from 10 km/h to 15 km/h.

• A bike turns left while traveling at 20 km/h.

• A bike continues straight without turning.

Tags

NGSS.HS-PS2-1