Physics, asked by priya8789, 9 months ago

NUMERICALS
1. A kangaroo can jump 2.5 m vertically. What must be
the initial velocity of the kangaroo? for 9std state board full solve sum

Answers

Answered by BrainlyHero80

Using third equation of motion,

v^2 = u^2 + 2as

v is equal to zero since velocity at highest point = 0

0 = u^2 + 2 ( - 9.8 ) × 2.5

0 = u^2 - 49

u^2 = 49

u = √49

u = 7 m/sec

ANSWER = 7 m/sec

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Answered by Anonymous

Answer:

The initial velocity of the kangaroo must be 7 m/s.

Explanation:

a = 9.8 m/s²

s = 2.5 m

v = 0 m/s

v² = u² + 2as

=> (0)² = u² + 2 * (-9.8) * 2.5

=> 0 = u² - 5 * 9.8

=> 0 = u² - 49

=> u² = 0 + 49

=> u² = 49

=> u = 7 m/s

So,

The initial velocity of the kangaroo must be 7 m/s.

Here, negative sign of acceleration shows that it is in the opposite direction of the velocity.

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NUMERICALS1. A kangaroo can jump 2.5 m vertically. What must bethe initial velocity of the kangaroo? for 9std state board full solve sum​

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NUMERICALS
1. A kangaroo can jump 2.5 m vertically. What must be
the initial velocity of the kangaroo? for 9std state board full solve sum