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Flashcards in Dynamics Deck (18):
1

the equation for average speed?

d= v- t

2

the equation for instantaneous speed?

d=vt

3

the equation for acceleration?

a= v-u/t

4

name vectors

displacement
velocity
acceleration
forces
weight
momentum

5

name scalars

distance
time
speed
energy
mass
temperature

6

what does a scalar require?

only size

7

what does a vector require?

size and a direction

8

what is newtons 1st law?

an object will remain at rest or continue to move at a constant speed IF the forces acting on the object are balanced.

9

what is newtons 2nd law?

F= ma
W= mg

10

what is newtons 3rd law?

every force has an equal and opposite reaction force

11

can forces be push or pull?

yes, they can be both

12

equation for horizontal speed?

d= vt

13

equation for vertical speed?

a= v-u / t

14

state the 9 types of energy

gravitational potential
sound
heat
atomic/nuclear
chemical
kinetic
light
electrical
strain

15

what's the conservation of energy?

energy can not be created or destroyed only converted from one to another.

16

equation for kinetic energy

Ek= 1/2m X v2

17

equation for gravitational potential energy

Ep= mgh

18

what does Ek stand for?

kinetic energy