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Question
Write scientific reason.
The value of gravitational acceleration (g) is taken to be -g when studying the motion of an object thrown upwards in a straight line.
Solution
- For motion of an object thrown upwards, magnitude of g is the same throughout the motion but the velocity of the object decreases with the increase in height.
- For object thrown upwards, the direction of acceleration due to gravity is opposite to the velocity of the object.
- Hence, the value of gravitational acceleration (g) is taken to be -g when studying the motion of an object thrown upwards in a straight line.
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