dynamics

Question 1

what is Newton’s 1st law of motion?

Answer 1

An object at rest will stay at rest and an object in motion will continue at a constant speed in a straight line in the same direction until it is acted upon by an unbalanced force.

Question 2

what is Newton’s 2nd law of motion?

Answer 2

An unbalanced force acting on an object causes an acceleration.

Question 3

What is Newton’s 3rd law of motion?

Answer 3

For every action there is an equal and opposite reaction. e.g a skateboard, you push backwards on the floor and the floor pushes forwards in you.

Question 4

What is terminal velocity?

Answer 4

The maximum constant speed reached by a falling object.

Question 5

What is the law of conservation of energy?

Answer 5

Energy cannot be created nor destroyed, it can only be transferred from one form to another or one location to another.

Question 6

What is gravitational potential energy?

Answer 6

Energy transferred to objects that are lifted off the ground

Question 7

scalars

Answer 7

Fully defined by magnitude alone e.g speed, distance, mass, time, energy

Question 8

vectors

Answer 8

defined by magnitude and direction e.g velocity, displacement, acceleration

Question 9

instantaneous speed?

Answer 9

Speed at a given moment or instant in time