Question #205703

15. A body projected upward from the level ground at certain angle, if the total time taken is 6.3sec with an initial velocity of 40m/s. Find (i) (ii) (iii) (iv) The angle of projection How far from the starting point will it strike the ground How height will it go  Max. Range  


1
Expert's answer
2021-06-11T11:21:28-0400

1)

α=arcsingt2v=50.5°,\alpha=\arcsin \frac{gt}{2v}=50.5°,

2)

l=v2sin2αg=153 m,l=\frac{v^2\sin 2\alpha}{g}=153~m,

3)

h=v2sin2α2g=49 m,h=\frac{v^2\sin^2\alpha}{2g}=49~m,

4)

s=l=153 m.s=l=153~m.


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