EOC Physics 2

Question 1

A 2 kg object is lifted 5 meters above the ground. What is its gravitational potential energy? (g = 10 m/s²)

Accepted Answer

100 J

Answer

Gravitational PE = mgh = 2 × 10 × 5 = 100 J.

Question 2

Which of the following best describes the Law of Conservation of Energy?

Accepted Answer

Total energy in an isolated system remains constant

Answer

The Law of Conservation of Energy states that energy cannot be created or destroyed; the total energy of an isolated system remains constant.

Question 3

What type of wave requires a medium to travel through?

Accepted Answer

Mechanical wave

Answer

Mechanical waves, such as sound and water waves, require a medium (solid, liquid, or gas) to propagate, unlike electromagnetic waves which can travel through a vacuum.

Question 4

In a wave, what is the distance between two consecutive crests called?

Accepted Answer

Wavelength

Answer

Wavelength is the distance between two consecutive points in phase on a wave, such as from crest to crest or trough to trough.

Question 5

A 4 kg object has a kinetic energy of 50 J. What is its approximate speed?

Accepted Answer

5 m/s

Answer

KE = ½mv², so 50 = ½(4)v², giving v² = 25 and v = 5 m/s.

EOC - End-of-Course Test Practice Test

EOC - End-of-Course Test Practice Test

EOC Physics 2