Kinematics Flashcards
1
Q
When can u re-arrange arrows to make a triangle
A
When they are all acting on the same object with a resultant force of 0
2
Q
Sin
A
= opp/hyp
3
Q
Cos
A
= Adj/hyp
4
Q
Tan
A
= Opp/adj
5
Q
For a system in equilibrium:
A
Resultant force = 0
Resultant moment = 0
6
Q
F =
A
F = ma
7
Q
KE =
A
KE = 1/2 mv^2
8
Q
What is the force acting downwards
A
Weight
9
Q
Closed triangle means
A
Resultant force is 0
10
Q
Newton’s first law
A
An object will remain at a constant velocity unless acted on by a resultant force
11
Q
Newton’s second law
A
F = ma
12
Q
Newton’s 3rd law
A
Every action has an equal and opposite reaction
13
Q
Scalars are
A
Quantity’s with only magnitude and NO direction
14
Q
Vectors are
A
Quantity’s with both magnitude and direction
15
Q
Value of g
A
-9.81
