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Dafna11 [192]
3 years ago
7

I need help with two more Physics problems​

Physics
2 answers:
sesenic [268]3 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]3 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:

31.005 KJ

Explanation:

We are given that

Mass of hammerhead=25 kg

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Final velocity,v=50 m/s

h=-1 m

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Change in total energy=E_2-E_1=m(u_2-u_1)+\frac{1}{2}m(v^2-u^2)+mg(h-h')

Using the formula

Change in internal energy of hammerhead=m(u_2-u_1)=0

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3 years ago
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