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Q.

Acceleration due to the gravity of a body that is thrown up is which of the following?


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a

9.8 ms-2           

b

-9.8 ms-2           

c

Zero           

d

±4.9 ms-2  

answer is B.

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Detailed Solution

Acceleration due to the gravity of a body that is thrown up is -9.8 ms-2.
The Earth always pulls objects towards it because the force of gravity is always towards the Earth. But since the body is moving vertically upwards in this case, the acceleration due to gravity is working downwards. That’s why the acceleration on the upward-moving object will be considered negative. And its value will be -9.8 ms-2.
 
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