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physics paper 1,2 ........can we discuus da papper nw?

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i wrote fr fiction force opposing body in motion and what u wrote why acceleration decreases as he moves along level road
air resistance increases , is greater than forward force.
unbalanced forces , so , acceleration decreases
 

asd

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air resistance increases , is greater than forward force.
unbalanced forces , so , acceleration decreases
I think that air resistance did not get greater than the forward force, it just increased to near the forward force decreasing the resultant force, hence the acceleration too.
 
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I think that air resistance did not get greater than the forward force, it just increased to near the forward force decreasing the resultant force, hence the acceleration too.
lol :p
even if it nears the forward norce , it will not decelerate since it has not overcome the force.
it has to be greater then the driving force to make it decelerate.
 

asd

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lol :p
even if it nears the forward norce , it will not decelerate since it has not overcome the force.
it has to be greater then the driving force to make it decelerate.
It did not said decelerate :D
It said acceleration decreased, which was obviously going to be that the air resistance force increased to the magnitude of driving force, decreasing the resultant force.
 

asd

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It did not said decelerate :D
It said acceleration decreased, which was obviously going to be that the air resistance force increased to the magnitude of driving force, decreasing the resultant force.
say * D:
 
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It did not said decelerate :D
It said acceleration decreased, which was obviously going to be that the air resistance force increased to the magnitude of driving force, decreasing the resultant force.
i dont know mate. Just hope for the best
Pray to ALLAH for a good grade.
now if you'll excuse me, i've got to prepare for chemistry :)
 
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Why was the answer to the hill one B ?
first of all keep in mind that the graph was a speed time graph and it wasn't the height of the hill as it looked confusing bcuz of its hilly shape and people naturally felt the answe rwill be A or C or D as it said bottom of the hill.
then keep following that he is at the bottom of the first hill.... all the gravitaional potential energy is converted to kinetic energy. speed is directly propotional to kinetic energy so here it has the highest speed and the highest speed was B. hope it explained :)
 
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first of all keep in mind that the graph was a speed time graph and it wasn't the height of the hill as it looked confusing bcuz of its hilly shape and people naturally felt the answe rwill be A or C or D as it said bottom of the hill.
then keep following that he is at the bottom of the first hill.... all the gravitaional potential energy is converted to kinetic energy. speed is directly propotional to kinetic energy so here it has the highest speed and the highest speed was B. hope it explained :)
Thnx :)
I got it wrong :/
 
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first of all keep in mind that the graph was a speed time graph and it wasn't the height of the hill as it looked confusing bcuz of its hilly shape and people naturally felt the answe rwill be A or C or D as it said bottom of the hill.
then keep following that he is at the bottom of the first hill.... all the gravitaional potential energy is converted to kinetic energy. speed is directly propotional to kinetic energy so here it has the highest speed and the highest speed was B. hope it explained :)
Wht was the answer to the centre of mass one ?
 
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