Week 7 - Linear Kinetics 2 Flashcards
1
Q
What is impulse
A
Change in momentum
2
Q
Impulse equation
A
Impulse = force x time
3
Q
What rule can we use when calculating impulse off a graph
A
Trapezium rule
4
Q
Describe zero impulse
A
+ve impulse = -ve impulse
Change in momentum = 0
Change in velocity = 0
5
Q
Describe positive impulse
A
+ve > -ve
Change in momentum >0
Change in velocity >0
6
Q
Describe energy
A
Quantitative property that must be transferred to a body or physical system to perform work on the body
7
Q
What two parts can we split mechanical energy into
A
Potential energy
Kinetic energy
8
Q
Describe potential energy
A
The energy a body possesses due to its position relative to the earths surface
PE=mgh
9
Q
Describe kinetic energy
A
The energy a body possesses due to its movement
KE=0.5mv^2
