Dynamics Flashcards
1
Q
What is a vector?
A
A vector quantity has magnitude and direction
2
Q
What is a scalar?
A
A scalar quantity has magnitude only
3
Q
What is the vector for the scalars speed, distance, time, energy and mass?
A
Velocity, displacement, force, acceleration and there is none for mass
4
Q
What are the two ways can direction be given?
A
Using a compass to give headings
Or
Using three figure bearings
5
Q
What is displacement?
A
Displacement tells you how far away you are in a certain direction
6
Q
What is Newton’s first law?
A
An object at rest will remain at rest or will remain at a constant speed in a straight line unless acted on by an unbalanced force.
7
Q
What is Newton’s second law?
A
force=mass X acceleration
F= N
a= ms^-2
m= kg
If an unbalanced force is applied to a mass it will accelerate
