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please help me

2007-01-05 00:12:05 · 3 answers · asked by James Arnold 2 in Science & Mathematics Physics

3 answers

velocity = starting velocity + acceleration x time

distance travellled = 1/2 x acceleration x time squared.

2007-01-05 00:15:20 · answer #1 · answered by Gene 7 · 0 0

Well Natalie, we should start with the definition of acceleration, that is,
a = (v-u)/t
where a is the acceleration, v is the final speed, u is the initial speed, and t the time taken.
You must take care to take the vector values in a given direction.
Also, it can be shown for constant acceleration that,
s = (u+v).(t/2)
where s is the displacement
using these two fundamental formulae you can derive,
s = ut + (1/2)at^2
and
v^2 = u^2 + 2as

Hope this helps!

2007-01-05 08:30:52 · answer #2 · answered by yasiru89 6 · 0 0

there are five formulas in solving problems concerned with motion with constant acceleration...

(acceleration=a, final velocity= fv, initial velocity=iv, distance=x, time=t)

1. a=(vf-iv)/t

2. vf=iv+a*t

3. x=1/2*(vf+iv)*t

4. vf squared= iv squared + 2*a*x

5. x=iv*t + 1/2*a*tsquared

note:
you can use equations 1 and 2 if distance is not given.

equation 3 if acceleration is not given.

equation 4 if time is not given

equation 5 if final velocity is not given

2007-01-05 08:49:59 · answer #3 · answered by redelicious 1 · 0 0

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