Mechanics 2.0

Question 1

What is the formula for calculating velocity?

Answer 1

Velocity = Distance / Time

Question 2

True or False: Acceleration is the rate of change of velocity.

Answer 2

True

Question 3

What is the SI unit of force?

Answer 3

Newton (N)

Question 4

What is the formula for calculating acceleration?

Answer 4

Acceleration = Change in Velocity / Time

Question 5

What is the formula for calculating momentum?

Answer 5

Momentum = Mass x Velocity

Question 6

True or False: Inertia is the resistance of an object to a change in its state of motion.

Answer 6

True

Question 7

What is the relationship between force, mass, and acceleration?

Answer 7

Force = Mass x Acceleration

Question 8

What is the formula for calculating work?

Answer 8

Work = Force x Distance x cos(theta)

Question 9

What is the SI unit of work and energy?

Answer 9

Joule (J)

Question 10

True or False: Power is the rate at which work is done or energy is transferred.

Answer 10

True

Question 11

What is the formula for calculating power?

Answer 11

Power = Work / Time

Question 12

What is the SI unit of power?

Answer 12

Watt (W)

Question 13

What is the principle of conservation of energy?

Answer 13

Energy cannot be created or destroyed, only transformed from one form to another.

Question 14

What is the formula for calculating potential energy?

Answer 14

Potential Energy = Mass x Gravity x Height

Question 15

What is the formula for calculating kinetic energy?

Answer 15

Kinetic Energy = 0.5 x Mass x Velocity^2

Question 16

What is the SI unit of pressure?

Answer 16

Pascal (Pa)

Question 17

What is the formula for calculating pressure?

Answer 17

Pressure = Force / Area

Question 18

True or False: Buoyant force is the upward force exerted by a fluid on an object immersed in it.

Answer 18

True

Question 19

What is the SI unit of density?

Answer 19

Kilogram per cubic meter (kg/m^3)

Question 20

What is the formula for calculating density?

Answer 20

Density = Mass / Volume

Question 21

What is the formula for calculating buoyant force?

Answer 21

Buoyant Force = Density of Fluid x Volume Displaced x Gravity

Question 22

True or False: Friction is a force that opposes the motion of an object.

Answer 22

True

Question 23

What is the formula for calculating frictional force?

Answer 23

Frictional Force = Coefficient of Friction x Normal Force

Question 24

What is the SI unit of impulse?

Answer 24

Newton-second (N.s)

Question 25

What is the formula for calculating impulse?

Answer 25

Impulse = Force x Time

Question 26

True or False: Impulse is equal to the change in momentum of an object.

Answer 26

True

Question 27

What is the formula for calculating angular velocity?

Answer 27

Angular Velocity = Change in Angle / Time

Question 28

What is the SI unit of torque?

Answer 28

Newton-meter (N.m)

Question 29

What is the formula for calculating torque?

Answer 29

Torque = Force x Lever Arm

Question 30

What is the SI unit of angular momentum?

Answer 30

Kilogram-square meter per second (kg.m^2/s)

Question 31

What is the formula for calculating angular momentum?

Answer 31

Angular Momentum = Moment of Inertia x Angular Velocity

Question 32

True or False: Conservation of angular momentum states that the total angular momentum of a system remains constant if no external torque is applied.

Answer 32

True

Question 33

What is the formula for calculating centripetal force?

Answer 33

Centripetal Force = Mass x (Velocity^2 / Radius)

Question 34

What is the formula for calculating centripetal acceleration?

Answer 34

Centripetal Acceleration = (Velocity^2 / Radius)

Question 35

True or False: Centripetal acceleration is directed towards the center of the circular path.

Answer 35

True

Question 36

What is the formula for calculating period of a pendulum?

Answer 36

Period = 2 x pi x sqrt(Length / g)

Question 37

What is the formula for calculating frequency?

Answer 37

Frequency = 1 / Period

Question 38

What is the SI unit of frequency?

Answer 38

Hertz (Hz)

Question 39

True or False: Period and frequency are inversely proportional to each other.

Answer 39

True

Question 40

What is the formula for calculating gravitational force?

Answer 40

Gravitational Force = (G x Mass1 x Mass2) / (Distance^2)