A particle is dropped from rest and another p | vedclass

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(D) Let the first particle be $A$ and the second particle be $B$. For particle $A$,initial velocity $u_A = 0$ and acceleration $a_A = g$. For particle

Vedclass · Accepted Answer

All of these.

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(D) Let the first particle be $A$ and the second particle be $B$. For particle $A$,initial velocity $u_A = 0$ and acceleration $a_A = g$. For particle $B$,initial velocity $u_B = u$ and acceleration $a_B = g$.Relative acceleration: $a_{BA} = a_B - a_A = g - g = 0$. Thus,option $C$ is correct.Relative velocity: $v_{BA} = v_B - v_A = (u + gt) - (0 + gt) = u$. Thus,option $B$ is correct.Relative displacement: $s_{BA} = s_B - s_A = (ut + \frac{1}{2}gt^2) - (0 + \frac{1}{2}gt^2) = ut$. Setting $s_{BA} = h$,we get $ut = h$,so $t = \frac{h}{u}$. Thus,option $A$ is correct.Since all statements are correct,the answer is $D$.

$A$ particle is dropped from rest and another particle is thrown downward simultaneously with initial speed $u$. Then:

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