Mechanics Flashcards
1
Q
Give 3 examples of scalar quantities
A
Distance, Speed, Mass
2
Q
Give 3 examples of vectors
A
Displacement, Velocity, Acceleration
3
Q
How to resolve vectors?
A
Resolve them into horizontal and vertical components
4
Q
If the centre of mass of a beam is midway between both supports, how much force does each support exert?
A
Equal amounts
Take moments about S1 to calculate S2, to work out S1
5
Q
In displacement time graphs, what does the gradient mean?
A
Velocity
6
Q
In velocity time graphs what does the gradient represent?
A
Acceleration
7
Q
In a velocity time graph what does the area underneath the graph mean?
A
Displacement (if velocity is always +)
8
Q
Define scalar and vector quantities
A
Vector quantity had magnitude as well as direction, whereas scalar only has magnitude
