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# PHY101 GDB Solution & Discussion due date 9 fab 2017

PHY101 GDB Solution & Discussion due date 9 fab 2017

 Total Marks 5 Starting Date Thursday, February 09, 2017 Closing Date Friday, February 10, 2017 Status Open Question Title Graded discussion board Physics (PHY1041) Question Description “Suppose you throw a football upward. Is it true or wrong to say that you have not increased the internal energy of the air within the football?” Either yes or no explain it with solid reasons.

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PHY 101 (PHYSICS)

Due Date: February 10, 2017

Total Marks: 05

=========================

Question no 1:

“Suppose you throw a football upward. Is it true or wrong to say that you have not increased the internal energy of the air within the football?”

It is true that we have not increase the internal energy of the air within the football, because a football which is moving upwards and right wards towards its peak, then it has both an upward and a rightward velocity; it does not however have an upward and a rightward force. In fact, if acting as a projectile, it has no horizontal forces and maintains a constant horizontal velocity similarly, it would have a downward force of gravity and a slowing down motion as it rises. If the football were not a projectile, then the horizontal forces would be leftward (air resistance opposing its motion) and the vertical force would be gravity and air resistance, both directed downward.

Gdb

Phy101

it is true that we have not increase the internal energy of the air within the football, because a football which is moving upwards and right wards towards its peak, then it has both an upward and a rightward velocity; it does not however have an upward and a rightward force. In fact, if acting as a projectile, it has no horizontal forces and maintains a constant horizontal velocity similarly, it would have a downward force of gravity and a slowing down motion as it rises. If the football were not a projectile, then the horizontal forces would be leftward (air resistance opposing its motion) and the vertical force would be gravity and air resistance, both directed downward.

Gdb
Phy101

t is true that we have not increase the internal energy of the air within the football, because a football which is moving upwards and right wards towards its peak, then it has both an upward and a rightward velocity; it does not however have an upward and a rightward force. In fact, if acting as a projectile, it has no horizontal forces and maintains a constant horizontal velocity similarly, it would have a downward force of gravity and a slowing down motion as it rises. If the football were not a projectile, then the horizontal forces would be leftward (air resistance opposing its motion) and the vertical force would be gravity and air resistance, both directed downward.

Thanks paa ji

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