All definitions (WIP)

Question 1

Accuracy

Answer 1

Accuracy is the degree to which measurements approach the true value of the quantity being measured

Question 2

Precision

Answer 2

Precision is the degree of how close measurements of the same quantity are to each other.

Question 3

Displacement

Answer 3

Displacement of a body is the distance from a reference point in a specific direction

Question 4

Velocity

Answer 4

Velocity of a body is defined as the rate of change of displacement.

Question 5

Acceleration

Answer 5

Acceleration of a body is defined as the rate of change of velocity

Question 6

Momentum

Answer 6

Momentum is defined as the product of a body’s mass and its linear velocity

Question 7

Impulse

Answer 7

Impulse is defined as the product of the net force and the time interval which the force is applied

Question 8

Newton’s first law

Answer 8

A body will stay at rest or continue to move at a constant velocity unless acted upon by a resultant external force

Question 9

Newton’s second law

Answer 9

The rate of change of momentum of a body
is directly proportional to the resultant force acting on the body
and the momentum change takes place in the direction of the resultant force

Question 10

Newton’s third law

Answer 10

Characteristics of action reaction pair
They are equal in magnitude but opposite in direction
They act on different bodies
The forces are the same type or nature

Question 11

Principle of conservation of linear momentum

Answer 11

The total momentum of a system remains constant provided no net external force acts on it