Mechanics and Property of Matter9 cards

Tagged as: physics, criminal justic, law

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1

Scalar Quantities

Only has a magnitude (size) Examples-Distance, speed, time, mass, energy , power

2

Vector Quantities

Has a magnitude and direction Examples - Displacemet, velocity, acceleration,force,momentum,impulse

3

Acceleration

a=(v-u)/t

4

Equations of motion - Definitions

s- displacement of object in time u- initial velocity of object v- final velocity of object a- acceleration of object t- time to accelerate

5

Equations of motion Only apply to constant acceleration , straight line

v=u+at s-ut+1/2(at)² v²=u²+2as s= (u+v)t/2

6

v=u+at

Derived from acceleration equation a=v-u/t

7

s=ut+1/2at²

Derived from speed-time graph s= areaA+ areaB s=ut +1/2(v-u)t s=ut+1/2(at)t s=ut+1/2(at)²

8

v²=u²+2as

Derived from equations one and two v²=(u+at)² =u²+2uat+a²t² =u²+2a(ut+1/2at²) =u²+2as