Physics Final Exam Review

Question 1

Which of the following situations involves an increase in momentum?

Accepted Answer

A rocket accelerating upwards.

Question 2

The bending of a wave as it passes from one medium to another is called:

Accepted Answer

Refraction

Question 3

What happens to the speed of sound as the temperature of the air increases?

Accepted Answer

It increases.

Question 4

A cannonball is fired horizontally. Which component of its velocity remains constant (ignore air resistance)

Accepted Answer

Horizontal component

Question 5

Which of the following is the unit for frequency?

Accepted Answer

Hertz (Hz)

Question 6

A projectile is launched horizontally from a cliff. How does its horizontal velocity change over time?

Accepted Answer

It remains constant.

Question 7

A large force applied a short time can produce the same impulse as a small force applied a long time. This is used in

Accepted Answer

All of the above

Question 8

What phenomenon occurs when waves overlap and combine to form a new wave?

Accepted Answer

Interference

Question 9

An echo is an example of what wave phenomenon?

Accepted Answer

Reflection

Question 10

In a transverse wave, how does the medium oscillate relative to the direction of wave propagation?

Accepted Answer

Perpendicular

Question 11

In an inelastic collision, which of the following is typically NOT conserved?

Accepted Answer

Kinetic energy

Question 12

Which of the following is true for projectile motion, assuming no air resistance?

Accepted Answer

Vertical acceleration is constant.

Question 13

When a gun is fired, the bullet goes forward and the gun kicks backward. This is an example of:

Accepted Answer

Conservation of momentum

Question 14

Which type of wave requires a medium to travel?

Accepted Answer

Sound wave

Question 15

The pitch of a sound is determined by its:

Accepted Answer

Frequency

Question 16

If a bullet is fired from a rifle the same instant a bullet is dropped from the same height, which bullet hits first?

Accepted Answer

They hit at the same time.

Question 17

What happens to the momentum of an object if its mass is doubled while its velocity remains constant?

Accepted Answer

It is doubled.

Question 18

Which of the following describes the human perception of frequency?

Accepted Answer

Pitch

Question 19

Sound travels fastest through which type of medium?

Accepted Answer

Solid

Question 20

What is the principle that states that the total momentum of a closed system remains constant?

Accepted Answer

Law of Conservation of Momentum

Question 21

A sound wave has a wavelength of 0.5 m and a speed of 340 m/s in air. What is its frequency?

Accepted Answer

680 Hz

Question 22

Two balls are dropped from the same height. Ball A = 1 kg, and Ball B = 2 kg. Which ball hits the ground first (negle

Accepted Answer

They hit at the same time.

Question 23

If two objects collide and bounce off each other without any loss of kinetic energy, the collision is considered:

Accepted Answer

Elastic

Question 24

An object has a mass of 10 kg and a velocity of 5 m/s. What is its momentum?

Accepted Answer

50 kg·m/s

Question 25

The phenomenon where a vibrating object causes another object to vibrate at its natural frequency is known as:

Accepted Answer

Resonance

Question 26

What is the lowest natural frequency of a vibrating object called?

Accepted Answer

Fundamental frequency

Question 27

A ball is thrown straight upward. At the very peak of its trajectory, what is its vertical velocity?

Accepted Answer

0 m/s

Question 28

The loudness of a sound is primarily determined by its:

Accepted Answer

Amplitude

Question 29

What is the path of a projectile called?

Accepted Answer

A parabola

Question 30

What is the change in momentum called?

Accepted Answer

Impulse

Question 31

A wave has a frequency of 5 Hz and a wavelength of 2 meters. What is its speed?

Accepted Answer

10 m/s

Question 32

A stone is dropped from a bridge. If it takes 3 seconds to hit the water, how high is the bridge? (g ≈ 10 m/s²)

Accepted Answer

30 m

Question 33

A 2 kg cart moving at 3 m/s collides with a 4 kg cart. If they stick together after the collision, what is the new velo

Accepted Answer

1.0 m/s

Question 34

What is the formula for momentum?

Accepted Answer

p = m * v

Question 35

An object is dropped from a tall building. What is its initial vertical velocity?

Accepted Answer

0 m/s

Question 36

Which of the following is an example of a longitudinal wave?

Accepted Answer

Sound wave

Question 37

What is the number of complete oscillations or cycles per unit of time?

Accepted Answer

Frequency

Question 38

The maximum displacement of a point on a wave from its equilibrium position is called its:

Accepted Answer

Amplitude

Question 39

Which of the following units is used for momentum?

Accepted Answer

kg·m/s

Question 40

What is the acceleration of an object projected upward or downward (neglecting air resistance)?

Accepted Answer

Constant and directed downwards

Question 41

Ignoring air resistance, which affects the time it takes for a projectile launched horizontally to hit the ground?

Accepted Answer

Vertical height of the launch

Question 42

What is a disturbance that transfers energy through a medium without transferring matter?

Accepted Answer

A wave

Question 43

A 5 kg object moves right at 10 m/s collides head-on with a 5 kg object moves left at 10 m/s. Velo final?

Accepted Answer

0 m/s

Question 44

In an elastic collision, which of the following is conserved?

Accepted Answer

Both momentum and kinetic energy

Question 45

Which best describes the acceleration of an object in free fall near the Earth's surface, ignore air resistance?

Accepted Answer

Is approximately 9.8 m/s² downwards

Question 46

Impulse is equal to the:

Accepted Answer

Change in momentum

Physics Final Exam Review

Questions 46

Physics Final Exam Review

Questions 46