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Standard IX

Physics

Instantaneous Speed

'A' is moving...

Question

'A' is moving towards east at 2 km/hr. 'B' is moving towards east at 3 km/hr. Relative speed of B to A is

2 km/hr

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3 km/hr

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1 km/hr

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0 km/hr

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Solution

The correct option is C 1 km/hr

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Similar questions

Two cars started moving from a point, one towards north at 40 km/hr & other towards East at 30 km/hr. The shortest distance between them after 2 hours in km is ___

Two cars started moving from a point, one toward north at 30 km/hr & other toward East at 40 km/hr : distance b/w them after 2 hr is ___

Q. Air speed of an aeroplane is

400 k m / h r

. The wind is blowing at

200 k m / h r

towards east direction. In what direction should the pilot try to fly the plane so as to move exactly towards north east

Q. Boat A is sailing towards north-east with velocity

\to v = 5^i + 5^j k m / h r

, where

^i

points east and

^j

, north. Boat B is at a distance of

50 k m

east and

100 k m

north of boat A and is sailing towards west at

10 k m / h r

. A will be at minimum distance from B in:

Q. Ship

A

is sailing towards north-east with velocity

\to v = 30^i + 50^j k m / h r

where

^i

points east and

^j

towards north. Ship

B

is at a distance of

80 k m

east and

150 k m

north of Ship

A

and is sailing towards west at

10 k m / h r

. Time in which

A

will be at minimum distance from

B

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