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The instantaneous speed of a body can be...

The instantaneous speed of a body can be measured:-

A

Graphically

B

By speedometer

C

Both of above

D

vectorially

Text Solution

Verified by Experts

The correct Answer is:
(i) `45^(@)` (ii) `2 ms^(-1)`
(a) From the diagram `vec(V)_(BT)` makes an angle of `45^(@)` with the x-axis
(b) Using sine rule
`V_(B)/(sin 135^(@))=V_(T)/(sin 15^(@))`
`rArr V_(B)=2 m//s`
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