Equations

Question 1

What is the formula for calculating force?

Answer 1

Force = Mass × Acceleration (F = ma)

Question 2

True or False: The unit of force is the Newton.

Answer 2

True

Question 3

Fill in the blank: The gravitational force between two masses is described by _____ Law.

Answer 3

Newton’s

Question 4

What does the equation F = ma represent?

Answer 4

It represents the relationship between force, mass, and acceleration.

Question 5

What is the formula for calculating kinetic energy?

Answer 5

Kinetic Energy = 1/2 × Mass × Velocity^2 (KE = 1/2 mv^2)

Question 6

What is the SI unit of energy?

Answer 6

Joule (J)

Question 7

Multiple choice: Which of the following is the formula for potential energy? A) PE = mgh B) PE = 1/2 mv^2 C) PE = Fd

Answer 7

A) PE = mgh

Question 8

What does the variable ‘g’ represent in the potential energy formula?

Answer 8

The acceleration due to gravity, approximately 9.81 m/s².

Question 9

True or False: Work is defined as force applied over a distance.

Answer 9

True

Question 10

What is the formula for calculating work?

Answer 10

Work = Force × Distance × cos(θ) (W = Fd cos(θ))

Question 11

Fill in the blank: The law of conservation of _____ states that energy cannot be created or destroyed.

Answer 11

Energy

Question 12

What is the formula for calculating power?

Answer 12

Power = Work / Time (P = W/t)

Question 13

What is the SI unit of power?

Answer 13

Watt (W)

Question 14

Multiple choice: Which equation represents Ohm’s Law? A) V = IR B) P = IV C) W = Fd

Answer 14

A) V = IR

Question 15

True or False: In Ohm’s Law, voltage is directly proportional to current.

Answer 15

True

Question 16

What is the formula for calculating the frequency of a wave?

Answer 16

Frequency = 1 / Period (f = 1/T)

Question 17

Fill in the blank: The speed of a wave is calculated using the formula _____ = frequency × wavelength.

Answer 17

Speed

Question 18

What is the equation for calculating acceleration?

Answer 18

Acceleration = (Final Velocity - Initial Velocity) / Time (a = (v_f - v_i)/t)

Question 19

True or False: Acceleration can be negative.

Answer 19

True

Question 20

What is the formula for calculating momentum?

Answer 20

Momentum = Mass × Velocity (p = mv)

Question 21

Multiple choice: Which of the following is a unit of momentum? A) kg·m/s B) J C) N·s

Answer 21

A) kg·m/s

Question 22

What is the principle of conservation of momentum?

Answer 22

In a closed system, the total momentum before an event is equal to the total momentum after the event.

Question 23

Fill in the blank: The equation for circular motion is _____ = v²/r.

Answer 23

Centripetal Acceleration

Question 24

What is the formula for Hooke’s Law?

Answer 24

F = -kx

Question 25

True or False: Hooke's Law describes the behavior of springs.

Answer 25

True

Question 26

What does the variable 'k' represent in Hooke's Law?

Answer 26

The spring constant.