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A bus moves over a straight level road w...

A bus moves over a straight level road with a constant acceleration a. A boy in the bus drops a ball out side. The acceleration of the ball w.r.t the bus and the earth are respectively

A

a and g

B

`a+ g and g-a `

C

` sqrt( a^(2) +g^(2) ) and g`

D

` sqrt ( a^(2) + g^(2) ) and a`

Text Solution

Verified by Experts

The correct Answer is:
C
` overset -a `ball (w.r.t.ground )`=-g hatj `
` overset -a ball` bus (w.r.t. bus ) `= overset-a _(ball) -overset - a _(bus ) `
` (##VMC_PHY_XI_WOR_BOK_01_C02_E02_064_S01.png" width="80%">
` |overset-a_(ball -bus ) | =sqrt (g^(2) + a^(2)) " ", sqrt (g^(2) +a^(2)) and g `
` (##VMC_PHY_XI_WOR_BOK_01_C02_E02_064_S02.png" width="80%">
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