0

Guest

Courses New

Two particles are released from the same height at an interval of 1s. How long after the first particle beings to fall will the two particles be 10 m apart?

Two particles are released from the same height at an interval of 1s. How long after the first particle beings to fall will the two particles be 10 m apart?  

Grade:9

2 Answers

Vikas TU
14149 Points
7 years ago
For Particle A (say) it must have travelled some distance in 1 sec after the second particle has been released.
at 1 sec,
finalveloccity
v = 0 + g*1 =  10 m./s
For particle B,
after 1 s when it fell,
x2 = 0 + 0.5*g*t^2..............(1)
Now,
Agin writing their distnace eqns after this 1 sec.
y1 = 10*t + 0.5*g*t^2............(2)
given x2 –  y1 = 10 m.................(3)
solving the eqns. (1)  (2) and (3) get t.
Yashwant singh
19 Points
6 years ago
Let the ball which is thrown first be AAnd the ball thrown after 1sec. be BLet time taken by ball A be t sec.And by ball be (t-1) sec.Let ball A reach at x than ball B will reach at (x-10) For ball A:S=-x ,u=0 ,time=t ,acc.=-10S=ut+1/2at^2-X= 0(t)-5t^2X=5t^2 (let this be eq. No. 1)For ball B:S=-(x-10) , u=0 , time=t-1, acc.=-10S=ut+1/2at^2-(x-10)= -5(t-1)^2 (since u=0)Putting value from eq. 1:5t^2-10=5t^2+5-10tT=15/10=1.5 sec. Put value in eq. 1and find x=11.25 m

Think You Can Provide A Better Answer ?

Other Related Questions on Modern Physics

View all Questions »

ASK QUESTION

Get your questions answered by the expert for free

Answer and earn gift vouchers

Win Gift vouchers upto Rs 500/-

View courses by askIITians

Design classes One-on-One in your own way with Top IITians/Medical Professionals

Click Here Know More

Complete Self Study Package designed by Industry Leading Experts

Click Here Know More

Live 1-1 coding classes to unleash the Creator in your Child

Click Here Know More

a Complete All-in-One Study package Fully Loaded inside a Tablet!

Click Here Know More