Questions
The particles P and Q are projected simultaneously from two towers as shown. They collide in mid air Then d is
a
10 m
b
20 m
c
15 m
d
25 m
detailed solution
Correct option is B
they together travel a horizontal distance d and vertical distance 20 -10 in time t verical distance travel 12gt2+102sin450t -12gt2=10 solving t=1 horiaontal distance travel in 1 sec (102cos 450+10)1=d d=20 mTalk to our academic expert!
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A stone is projected at an angle with the horizontal with a velocity 20 m/s from the top of a building 15 m high . The velocity with which it will hit the ground is
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