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Two bodies 1 and 2 are projected simultaneously with velocities  m/s and  m/s respectively. The body 1 is projected vertically up from the top of a cliff of height  m and the body 2 is projected vertically up from the bottom of the cliff. If the bodies meet, find the time (in s) of meeting of the bodies



Question ID - 153882 | SaraNextGen Top Answer

Two bodies 1 and 2 are projected simultaneously with velocities  m/s and  m/s respectively. The body 1 is projected vertically up from the top of a cliff of height  m and the body 2 is projected vertically up from the bottom of the cliff. If the bodies meet, find the time (in s) of meeting of the bodies

1 Answer
127 votes
Answer Key / Explanation : (5) -

 

(5)

Let the particle meet after at time . First of all, we choose the point of collision above the top of the cliff

For the first particle,

Then,     …(i)

For the second particle,

Then,      …(ii)

Referring to the figure,     …(iii)

Substituting  from Eq. (i),  from Eq. (ii) in Eq. (iii),

We have

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