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2 years ago

8

In the demonstration by Cal’s teacher, the string represents the force that keeps the planet in orbit. Which statement BEST desc

ribes what would happen first if the string broke while swinging the ball during the demonstration?
A
The ball would continue orbiting.

B
The ball would immediately fall to the ground.

C
The ball would fly in a straight line away from the teacher.

D
The ball would move in a spiral getting farther away from the teacher.

1 answer:

Flauer [41]2 years ago

5 0

Answer:

yessyes

Explanation:

yes

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A tugboat tows a ship with a constant force of magnitude F1. The increase in the ship's speed during a 10 s interval is 3.0 km/h

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Answer:

The magnitude of F₁ is 3.7 times of F₂

Explanation:

Given that,

Time = 10 sec

Speed = 3.0 km/h

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$F_{1}=ma_{1}$

We need to calculate the acceleration

Using formula of acceleration

$a_{1}=\dfrac{v}{t}$

$a_{1}=\dfrac{0.833}{10}$

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Similarly,

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$ma_{3}=ma_{2}+ma_{1}$

The speed of second tugboat is

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$a_{3}=\dfrac{v}{t}$

$a_{3}=\dfrac{3.05}{10}$

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We need to calculate the acceleration a₂

$0.305=a_{2}+0.083$

$a_{2}=0.305-0.083$

$a_{2}=0.222\ m/s^2$

We need to calculate the factor of F₁ and F₂

Dividing force F₁ by F₂

$\dfrac{F_{1}}{F_{2}}=\dfrac{m\times0.83}{m\times0.22}$

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$F_{1}=3.7F_{2}$

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