PHYSICS FINALS

According to Galileo's theory, which of the following is true about objects falling under gravity?

• Heavy objects fall faster than lighter ones.

• Light and heavy objects fall at different rates.

• All objects fall with the same acceleration (without air resistance).

• The speed of falling objects is proportional to their mass.

In a vacuum, if you drop a feather and a hammer, which will hit the ground first?

• The feather, because it is lighter.

• Both will hit the ground at the same time.

• The hammer, because it is heavier.

• The feather will fall slower due to air resistance.

What is the acceleration due to gravity on Earth?

• 9.81 m/s² upwards

• 9.81 m/s² horizontally

• 9.81 m/s² downward

• 10 m/s² downward

A rock is thrown upward with an initial velocity of 20 m/s. What is its velocity at the maximum height?

• 20 m/s upwards

• 0 m/s

• 20 m/s downwards

• -20 m/s

Which of the following best describes a mechanical wave?

• A wave that can travel through a vacuum.

• A wave that requires a medium to travel through.

• A wave that carries energy without any disturbance.

• A wave that does not transfer energy.

You are at a concert and hear a sound that is gradually getting louder as the musicians approach. Which phenomenon is responsible for this?

• Doppler Effect

• Interference

• Doppler Effect

• Reflection

What kind of wave is a sound wave?

• Transverse wave

• Longitudinal wave

• Electromagnetic wave

• Radiowave

A wave with a frequency of 10 Hz has a wavelength of 2 meters. What is the wave velocity?

• 5 m/s

• 20 m/s

• 50 m/s

• 2 m/s

If the wavelength of a wave increases, what happens to its frequency?

• The frequency increases.

• The frequency decreases.

• The frequency stays the same.

• The frequency becomes zero.

What is the relationship between wavelength and frequency in mechanical waves?

• Longer wavelength means higher frequency.

• Shorter wavelength means lower frequency.

• Longer wavelength means lower frequency.

• Wavelength and frequency are unrelated.