Question

A person started from origin and moving towards x direction. He travelled 4 m distance in x direction in 2 sec. Then he taken left turn and he travelled 6 m distance in 3 sec and finally he taken right turn and he travelled 4 m distance in 5 sec. Find out the speed of the person when travels in y direction? O 1 m/s
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Answer 1

Answer:

m

The correct option is A.

Given,

x=t

2

−4t+6

So, the change in velocity is:

dt

dx

=2t−4

Since velocity is changing,

At t=0,x

1

=6

At t=2,x

2

=2

So the magnitude of the distance traveled is:

6−2=4m

At t=3,x

3

=3

So distance traveled from t=2s to t=3s

x

3

−x

2

=3−2=1m

Thus the total distance is:

4+1=5m

Explanation:

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