Question

if displacement of a body s=(200±5)m and time taken by it T =(20±0.2)m.find the percentage error in the calculation of velocity​

Answer 1

Answer:

we know that,speed=distance/time

I.e,v=s/T

∆v/v *100= ∆s/s*100 + ∆t/t*100

∆v/v*100=5/200*100+0.2/20*100

=(5/200+0.2/20)*100

=(2.5+1)

=3.5%,can be +ve or - ve