When a ball is let free fall from top of building. What is the acceleration and what it's sign?
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a ball if it is let free fall from the top of the building it is under free fall with only the influence of the gravitational force...
universal law of gravitation
F=GMm
d^2
then the result is =
9.8 m/s
it's sign is metre per second. (m/s)
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Explanation:
The accelleration eill be very close to 9.8m/s/s downwards towards Earth. Accelleration is a vector, so speaking of a sign doesn't really make sene, unless you plot it into a defined coordinate system.
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