A particle is projected with a velocity of 20 metre per second at an angle of 30 degree with the plane of inclination 30° with respect to the horizontal. The particle hits the incline plane at an angle of 30 degree .Find the(a) time of impact(b) the height of the point of impact from the horizontal plane passing through the point of projection.
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Answer:
t=
gcos30
o
2×2×sin15
o
S=2cos15
o
×t−
2
1
gsin30
o
t
2
put values and solve
S≃20cm
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