mechanics Flashcards
1
Q
newtons first law
A
an object will not change its motion unless a force acts on it
2
Q
newtons 2nd law
A
the force on an object is = to its mass x its acceleration
3
Q
newtons 3rd law
A
when two objects interact, they apply forces to each other of equal magnitude and opposite direction
4
Q
force
A
mass x acceleration
5
Q
work
A
force x distance
6
Q
kenetic energy
A
0.5 x mass x velocity^2
7
Q
effects of forces on an object
A
causes the object to change its shape or size,
to start moving, to stop moving, to accelerate or decelerate.
exert a force on each other, these exerted forces are equal in size but opposite in direction.
8
Q
acceleration
A
the rate of change of velocity
(change in velocity / time taken)
