作者：Sophie Watson 9 年以前
554
mind map
Newtons laws and force
force
force = mass x acceleration
momentum
speed
speed= distance divided by time
Subtopic
2nd law
F=mass x acceleration
acceleration
velocity
velocity equals distance divided by time
3rd law
there is always an equal and opposite action and reaction
1st law
an object at rest or in motion stays that way until an outside force acts upon in
