The value of 5/121^1/2
1 answer:
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Answer:
Step-by-step explanation:
The area of a rectangle formula is length times width.
The length of this rectangle is , and the width of this rectangle is
Thus, the area of the rectangle is . This can be expanded using FOIL.
First
Outer
Inner
Last
The two x terms combine, making 8x, and the answer is
Answer:
The speed is 20.8 m/s
Step-by-step explanation:
If a projectile ascends vertically, and after 3 seconds it reaches its maximum height, calculate the velocity that it carries to the middle of its downward trajectory
Let the maximum height is h and initial velocity is u.
From first equation of motion
v = u + at
0 = u - g x 3
u = 3 g.....(1)
Use third equation of motion
Let the speed at half the height is v'.