how did the acceleration -9.8m/s square came!! explain it briefly!! no spam
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The acceleration is - 9.8 m/sec square...
See,
We know that acceleration due to gravity is 9.8 m/sec square.
On calculation of can be obtained.
Now,
In the acceleration due to gravity,
The direction of motion is towards earth.
I mean that the earth objects experience attraction towards the earth.
In this case,
The object is thrown up
This means that the direction of motion is away from Earth.
Also, the object experiences the constant retardation due to the acceleration due to earth.
In physics,
The negative sign only indicates the direction.
The negative sign simply means that the direction of something is opposite as compared to that of the initial one.
Thus,
In this case the 'g' or the acceleration due to the gravity is acting but the motion is in opposite direction (that is away from the earth).
This is why the 'a' is taken as - 9.8 m/sec² instead of 9.8 m/sec²
See,
We know that acceleration due to gravity is 9.8 m/sec square.
On calculation of can be obtained.
Now,
In the acceleration due to gravity,
The direction of motion is towards earth.
I mean that the earth objects experience attraction towards the earth.
In this case,
The object is thrown up
This means that the direction of motion is away from Earth.
Also, the object experiences the constant retardation due to the acceleration due to earth.
In physics,
The negative sign only indicates the direction.
The negative sign simply means that the direction of something is opposite as compared to that of the initial one.
Thus,
In this case the 'g' or the acceleration due to the gravity is acting but the motion is in opposite direction (that is away from the earth).
This is why the 'a' is taken as - 9.8 m/sec² instead of 9.8 m/sec²
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