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Dafna11 [192]
2 years ago
7

I need help with two more Physics problems​

Physics
2 answers:
sesenic [268]2 years ago
8 0

Answer:

c. They hit at the same time

b. BGS

Explanation:

A marble dropped (initial vertical velocity is 0) will land at the same time as a marble launched horizontally (initial vertical velocity is 0) from the same height.

Boat S has a net speed of 5 m/s (10 − 5).

Boat B has a net speed of 15 m/s (10 + 5).

Boat G has a net speed of ≈11.2 m/s (√(10² + 5²)).

Aliun [14]2 years ago
3 0

Answer:

For the first question the answer is they hit the ground at the same time.

Explanation:

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Answer:

x = 1.018 m

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given,

height of man = 190 cm

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Let center of gravity of man be x distance from feet, feet is on right side.

For system to be in equilibrium moment about center should be equal to zero.

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450(1.9 - x ) - 390 × x = 0

450(1.9 - x ) = 390 × x

855 - 450 x = 390 x

840 x = 855

 x = \dfrac{855}{840}

 x = 1.018 m

hence, point of center of gravity from feet is equal to x = 1.018 m

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