Force,Mass and Momentum

Question 1

What is the formula for calculating force?

Answer 1

Force equals mass times acceleration (F = m * a).

Question 2

True or False: Mass is a measure of the amount of matter in an object.

Answer 2

True.

Question 3

Fill in the blank: The unit of force in the International System of Units (SI) is the ______.

Answer 3

Newton.

Question 4

What is momentum?

Answer 4

Momentum is the product of an object’s mass and its velocity (p = m * v).

Question 5

Multiple Choice: Which of the following is not a unit of mass? A) Kilogram B) Gram C) Newton D) Tonne

Answer 5

C) Newton.

Question 6

What is the law of conservation of momentum?

Answer 6

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

Question 7

Fill in the blank: Acceleration is the change in ______ over time.

Answer 7

velocity.

Question 8

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

Answer 8

Force is directly proportional to mass and acceleration.

Question 9

Fill in the blank: The momentum of an object is a ______ quantity, meaning it has both magnitude and direction.

Answer 9

vector.

Question 10

What happens to the momentum of an object if its velocity doubles?

Answer 10

The momentum also doubles.

Question 11

Multiple Choice: What is the effect of increasing the mass of an object while keeping acceleration constant? A) Force increases B) Force decreases C) No effect on force D) Force becomes zero

Answer 11

A) Force increases.

Question 12

What is the unit of momentum in the International System of Units (SI)?

Answer 12

Kilogram meter per second (kg·m/s).

Question 13

True or False: Force can change the shape of an object.

Answer 13

True.

Question 14

Fill in the blank: The change in momentum of an object is equal to the ______ applied to it.

Answer 14

force.

Question 15

What type of quantity is mass?

Answer 15

Scalar quantity.

Question 16

True or False: The greater the force applied to an object, the greater its acceleration will be.

Answer 16

True.

Question 17

What is the relationship between acceleration and net force?

Answer 17

Acceleration is directly proportional to net force and inversely proportional to mass.

Question 18

Define Weight

Answer 18

The weight of an object is the force of the Earths Gravity

Question 19

Newton’s first law of motion

Answer 19

states that every body will remain in a state of rest or travelling with a constant velocity unless an unbalanced external force acts on it

Question 20

Newton’s second law of motion

Answer 20

states that when an unbalanced force acts on a body the rate of change of the body’s momentum is directly proportional to the force and takes place in the direction of the force

Question 21

Newton’s third law of motion

Answer 21

states that if a body A exerts a force on a body B, then body B exerts an equal but opposite force on body A, i.e. action and reaction are equal and opposite

Question 22

What is the definition of work in physics?

Answer 22

Work is defined as the product of the force applied to an object and the distance over which that force is applied in the direction of the force.

Question 23

True or False: Work is a scalar quantity.

Answer 23

True

Question 24

Fill in the blank: The formula for calculating work is _____ = Force × Distance × cos(θ).

Answer 24

Work

Question 25

What unit is work measured in?

Answer 25

Joules (J)

Question 26

What does the term 'energy' refer to in physics?

Answer 26

Energy refers to the capacity to do work.

Question 27

Multiple choice: Which of the following is a form of mechanical energy? A) Thermal B) Kinetic C) Chemical D) Nuclear

Answer 27

B) Kinetic

Question 28

What is kinetic energy?

Answer 28

Kinetic energy is the energy of an object due to its motion.

Question 29

Fill in the blank: Kinetic energy can be calculated using the formula _____ = 1/2 mv².

Answer 29

KE

Question 30

True or False: Potential energy is energy due to an object's position.

Answer 30

True

Question 31

What is the formula for gravitational potential energy?

Answer 31

PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Question 32

Multiple choice: What is the SI unit of power? A) Joule B) Watt C) Newton D) Pascal

Answer 32

B) Watt

Question 33

What is the definition of power in physics?

Answer 33

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

Question 34

Fill in the blank: Power can be calculated using the formula _____ = Work / Time.

Answer 34

Power

Question 35

True or False: 1 Watt is equal to 1 Joule per second.

Answer 35

True

Question 36

What is the work-energy theorem?

Answer 36

The work-energy theorem states that the work done on an object is equal to the change in its kinetic energy.

Question 37

Multiple choice: Which of the following does NOT affect the work done on an object? A) Force B) Distance C) Time D) Angle

Answer 37

C) Time

Question 38

What is the principle of conservation of energy?

Answer 38

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Question 39

Fill in the blank: The total mechanical energy of a system is the sum of its _____ and _____ energy.

Answer 39

kinetic; potential

Question 40

True or False: An object at rest has kinetic energy.

Answer 40

False

Question 41

What happens to kinetic energy when an object comes to a stop?

Answer 41

The kinetic energy is converted to other forms of energy, such as thermal energy due to friction.

Question 42

Fill in the blank: The formula for power when force and velocity are known is _____ = Force × Velocity.

Answer 42

Power

Question 43

What is mechanical energy?

Answer 43

Mechanical energy is the sum of kinetic and potential energy in a system.