Question

partical is moving with Constant acceleration from A to B in a Straight line AB. If u and v are the velocities at A and B respectively ten its velocity at the mid point C will be

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Answer 1

Answer:

Assertion : Seed dispersal is 131ch harmful for plants. Reason: Seed dispersal prevents competition between the plant and its own seedlings for sunlight, water and minerals. * O A. Both A and R are true and Ris the correct explanation of A O B. Both A and Rare true and Ris not the correct explanation of A O C. A is true but Ris false O D. A is False but Ris true

Explanation:

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Answer 2

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ischliye bio change tiya (〒﹏〒)

Let the distance between A and B=s and as mentioned C is the midpoint of A and B thus distance between A C and

C B=

2

s

From equation of motion we get distance between AB

v

2

=u

2

+2as

s=

2a

v

2

−u

2

----------(1)

Let speed of the vehicle be pm/s at point C

Again from equation of motion we get,

p

2

=u

2

+2a

2

s

as distance between A and C is

2

s

s=

a

p

2

−u

2

-------(2)

Computing 1 and 2 we get

a

p

2

−u

2

=

2a

v

2

−u

2

p

2

=

2

v

2

+u

2

p=

2

v

2

+u

2