A particle is projected with a velocityof 20 m/s at an angle of 30^@ with a plane of inclination 30^@ with respect to the horizontal . Theparticle hits the inclined plane at an angle of 30^@ . Find the (a) time of impact, (b) the height of the point of impact from the horizontal plane passing through the point of projection.

A particle is projected with a velocityof 20 m/s at an angle of 30^@ w

1.	A particle is projected with a velocityof 20 m/s at an angle of 30^@ with a plane of inclination 30^@ with respect to the horizontal . Theparticle hits the inclined plane at an angle of 30^@ . Find the (a) time of impact, (b) the height of the point of impact from the horizontal plane passing through the point of projection.
Answer» ANSWER :1.76s; 15.3 m