A body travels uniformly a distance of `(10.0 +- 0.5 m)` in a time `(2.0 +- 0.1)` sec. The velocity of the body within error limits is :

Options

A. `(5.0 +- 0.6)` m/s
B. `(5.0 +- 0.5)` m/s
C. `(5.0 +- 0.05)` m/s
D. `(5.0 +- 1.0)` m/s

Answer

2

Explanation

`v=("distance")/("time")=((10.0+-0.5)m)/((2.0+-0.1)s)`
`"distance"=(10.0+-(0.5)/(10.0)xx100%)`
`=(10.0+-5%)`
`"time"=(2.0+-(0.1)/(2.0)xx100%)`
`=(2.0+-5%)`
`"velocity"=5.0+-10%=5.0+-(5.0xx10%)`