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abruzzese [7]
2 years ago
12

Which has a greater speed, a velocity of +5 m/s or a velocity of −10 m/s? *

Physics
1 answer:
Lapatulllka [165]2 years ago
5 0

Answer: it’s positive 5

Explanation:

Any positive is more than negative

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olganol [36]

Answer:

5.25 m

Explanation:

Given;

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h=-x^2+3x+3

Where;

h = the height above water

x = horizontal distance from the end of the board

The maximum height is at h' = 0, when change in h with respect to change in x is equal to zero.

differentiating the equation h.

dh/dx = h' = -2x + 3 = 0

Solving for x;

2x = 3

x = 3/2

Substituting into the function h;

h max = -x^2+3x+3

h max = -(3/2)^2 + 3(3/2) +3 = -9/4 +9/2 +3 = 9/4 + 3 =

h max = 21/4 = 5.25 m

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