formulas used for motion chapter for class 9th
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Answer:
Velocity or Speed = displacement or distance / time
Avg speed = total distance time
Avg velocity = initial velocity + final velcoity / time
Acceleration = final velocity - initial velocity / time
Uniform Circular Motion = 2πr / time
Key:
u = initial velocity
v = final velocity
a = acceleration
t = time
d = distance or displacement
Equation of motion:
1) v = u + at
2) s = ut + 1/2 at²
3) v² - u² = 2as
this is all i could remember.
if u want to verify, go through each page of the chapter so you remember and memorize them.
these will be very important ahead so do well.
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