Physics

Question 1

What is Newton’s First Law of Motion?

Answer 1

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Question 2

True or False: Gravity is a force that acts only on objects that are falling.

Answer 2

False

Question 3

Fill in the blank: The law of conservation of __________ states that energy cannot be created or destroyed, only transformed.

Answer 3

energy

Question 4

What is the formula for calculating force?

Answer 4

Force = Mass x Acceleration (F = ma)

Question 5

What does the term ‘kinetic energy’ refer to?

Answer 5

The energy possessed by an object due to its motion.

Question 6

Multiple Choice: Which of the following is an example of potential energy? A) A moving car B) A drawn bow C) A flowing river

Answer 6

B) A drawn bow

Question 7

What is the principle of buoyancy?

Answer 7

An object will float in a fluid if it displaces a weight of fluid equal to its own weight.

Question 8

True or False: The heavier an object, the faster it falls due to gravity.

Answer 8

False

Question 9

Fill in the blank: The __________ effect explains how a moving object experiences an increase in pressure on one side and a decrease on the other side.

Answer 9

Bernoulli

Question 10

What is the relationship between mass and weight?

Answer 10

Weight is the force exerted by gravity on an object’s mass.

Question 11

Multiple Choice: Which law explains why seatbelts are important in a car? A) Newton’s First Law B) Newton’s Second Law C) Newton’s Third Law

Answer 11

A) Newton’s First Law

Question 12

What is friction?

Answer 12

A force that opposes the motion of an object.

Question 13

True or False: Air resistance is a type of friction.

Answer 13

True

Question 14

Fill in the blank: The __________ law of thermodynamics states that energy spontaneously tends to flow only from being concentrated to becoming diffused.

Answer 14

second

Question 15

What does the term ‘inertia’ refer to?

Answer 15

The resistance of any physical object to any change in its velocity.

Question 16

Multiple Choice: Which of the following best describes acceleration? A) Change in speed B) Change in direction C) Change in velocity D) All of the above

Answer 16

D) All of the above

Question 17

What is the significance of the speed of light in physics?

Answer 17

It is the maximum speed at which all energy, matter, and information in the universe can travel.

Question 18

True or False: An object in free fall experiences no forces acting on it.

Answer 18

False

Question 19

Fill in the blank: The __________ principle states that for every action, there is an equal and opposite reaction.

Answer 19

third law of motion

Question 20

What is the difference between speed and velocity?

Answer 20

Speed is a scalar quantity representing how fast an object moves, while velocity is a vector quantity that includes direction.

Question 21

Multiple Choice: Which of the following is NOT a type of energy? A) Thermal B) Kinetic C) Magnetic D) Liquid

Answer 21

D) Liquid

Question 22

What is a simple machine?

Answer 22

A device that changes the direction or magnitude of a force.

Question 23

True or False: A lever is an example of a simple machine.

Answer 23

True

Question 24

Fill in the blank: The __________ of an object is the amount of matter it contains.

Answer 24

mass

Question 25

What is the role of an insulator in electrical circuits?

Answer 25

To prevent the flow of electric current.