Question

When two bodies moves uniformly towards each
other, then they cross each other at the speed of
10 m/s. If both the bodies move in the same direction,
then they cross each other at the speed of 6 m/s. The
speed of both bodies are​

Answer 1

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11th

Physics

Motion in a Straight Line

Introduction to Relative Motion

When two bodies move unifor...

PHYSICS

When two bodies move uniformly towards each other, the distance decreases by 6ms

−1

.If both bodies move in the same direction with the same speed as above the distance between them increases by 4ms

−1

. Then the speed of the two bodies are

A

3ms

−1

and 3ms

−1

B

4ms

−1

and 2ms

−1

C

5ms

−1

and 1ms

−1

D

7ms

−1

and 3ms

−1

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ANSWER

Given, Distance decreases with 6m/s Distance is increases =4m/s

Let v 1 ,V 2 is the velocity

So the relative velocity is

v 1 +v 2 =6m/s.....1

v 1 −v 2 =4m/s...........2

Adding equation 1 and 2 then we get,

2v 1 =10m/s⇒v 1 =5m/s

Put this value in equation 1 then we get,

v 1 +v 2 =6⇒v 2

=6−5=1m/s

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