Question

Example 3: A kangaroo can jump 2.5 m
vertically. What must be the initial velocity
of the kangaroo?​

Answer 1

Answer: 7m/s

Explanation:First remember the equation : vsquare - u square =2as

So, 2as=v square - u square

2as+v square = - u square

Substituting them :

2*9.8*2.5 + 0square = - usquare

49 +0 = - usquare

u square = - 49

u = root of 49

u = 7m/s