4)A grasshopper can jump max dist of 1.6m. It spends negligible time on ground. How far can it go in 10(2)^1/2 s?
5) 2 particles A and B are projected simultaneously from the 2 towers of ht. 10m and 20m respectively.A is projected with an initial speed of 14.14 m/s at an angle of 45 with the horizontal. B is projected horizontally with speed 10 m/s. If they collide in the air , what is the dist ‘d’ between the 2 towers?
6)2 inclined planes OA(left) and OB(right) intersect in a horizontal plane having their inclinations alpha and beta respectively with the horizontal. A particle is projected from a point P on OA with velocity ‘u’ along a direction perpendicular to plane OA. The particle strikes OB perpendicularly at Q. i) If alpha =30 degree, beta = 30 degree, the time of flight of projectile from P to Q is ______________
ii) If alpha =30 degree, beta = 30 degree, a= 4.9m, the initial velocity of projection is ___________
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1 Answers
62Ananya.. the first question is relatively simple..
you know the initial velocity.. (Using the maximum range)
Then try to find the minimum time using the distance..
It should not be tough.. (Post here if you cant.. I will post more of the solution :)