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Grade 11General Physics

two particles moving along the same straight line starting at the same moment from the same point in the same direction. The first moves with a constant velocity u and the socind with constant acceleration f. During the time that elapses before second catches the first, the greatest distance between the particles is?.....{hint: the answer is (u.u)/2f

Radhika Batra

12 Years agoGrade 11

1 Answer

shubham

8 Years ago

let x distance covered by time t

1 particle x1=vt

2 particle x2=ft^2/2

x=x1-x2

=vt-ft^2/2

for x max.

dx/dt=0

=v-ft=0

t=v/f

x=v(v/f)-fv^2/2f^2

=v^2/2f

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