a kangroo can jump 2.5m vertically . what must be the initial velocity of the kangroo (9=9.8)
Answers
Answered by
0
Answer:
v^2 - u^2= 2as
0 - u^2 = 2(9.8)(2..5)
u^2=49
u=7m/s
Answered by
0
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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