- #1
liquidblot
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Q1
A kangaroo was seen to jump to a vertical height of 2.8m. for how long was it in the air?
Attempt on the solution
not possible? what do you guys think?
Q2
A ball was photographed stroboscopically as it was released and fell freely. eight images appear on the phto which is reduced in scale by a factor of five. use the fact that the acceleration of the ball is 9.8ms(-2) to discover the time interval between the flashes of the stroboscope.
Attempt on the solution
part 1. calculating the distance between the first and second image, then mutiply by 5 (due to the scale factor).
since we are taking the first and second image, it would have a overall time of 1s.
Part 2.
take the calculated length as 0.04m:
v=d/t
v= 0.04/1
= 0.04 ms(-1)
then i got stuck on this step...
A kangaroo was seen to jump to a vertical height of 2.8m. for how long was it in the air?
Attempt on the solution
not possible? what do you guys think?
Q2
A ball was photographed stroboscopically as it was released and fell freely. eight images appear on the phto which is reduced in scale by a factor of five. use the fact that the acceleration of the ball is 9.8ms(-2) to discover the time interval between the flashes of the stroboscope.
Attempt on the solution
part 1. calculating the distance between the first and second image, then mutiply by 5 (due to the scale factor).
since we are taking the first and second image, it would have a overall time of 1s.
Part 2.
take the calculated length as 0.04m:
v=d/t
v= 0.04/1
= 0.04 ms(-1)
then i got stuck on this step...