kinematics

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in a soccer practice session the football is kept at the centre of the field 40yards from the 10ft high goalpoast. a goal is attempted by kicking the football at a speed of 64ft/s at an angle of 45Â° to the horizontal. will the ball reach the goalpost.

#Physics #General Physics

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2 Answers

1

sengupta ·2010-07-22 02:58:37

For horizontal motion time 't' =40 yards/ 64 cos 45

For vertical motion y= 64sin45 x t + 1/2 g t^2

Using t if the value of y =10 then the ball will reach

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6

AKHIL ·2010-07-22 07:21:53

t = u/costheta =2.65s
find y
it will come out to be 7.08 ft which is less than height of goal post...

ball will reach goal post...

btw this is frm HCV vol 1

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