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3 years ago

An astronaunt in a space capsule orbiting the earth experience weightlessness. why?

1 answer:

3 0

Many students believe that orbiting astronauts are weightless because they do notexperience a force of gravity. ... While this is partly true, it does not explain their sense of weightlessness. The force of gravity acting upon an astronaut on the spacestation is certainly less than on Earth's surface.

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The starting position is 0m. The starting velocity is 30m/s. Time is given as 2.5s. What is the final position of the object?

masya89 [10]

Answer:

Final position: 75m

Explanation:

Just multiply 30 by 2.5

3 0

2 years ago

A 60-kg passenger is in an elevator which is initially at rest. The elevator starts to travel downward. It reaches a downward sp

Delvig [45]

Answer:

a. Acceleration = 1.75 m/s²

b. Force = 105 Newton.

Explanation:

Given the following data:

Mass = 60kg

Final velocity = 7m/s

Time = 4 seconds

Required to find the acceleration and force of the body;

a. To find the acceleration;

Mathematically, acceleration is given by the equation;

$Acceleration (a) = \frac{final \; velocity - initial \; velocity}{time}$

Where;

a is acceleration measured in $ms^{-2}$
v and u is final and initial velocity respectively, measured in $ms^{-1}$
t is time measured in seconds.

Since the elevator is starting from rest, its initial velocity is equal to 0m/s.

Substituting into the equation, we have;

$Acceleration = \frac{7 - 0}{4}$

$Acceleration = \frac{7}{4}$

Acceleration = 1.75 m/s²

b. To find the force;

$Force = mass * acceleration$

Substituting into the equation, we have;

$Force = 60 * 1.75$

Force = 105 Newton.

4 0

2 years ago

How do I find the atomic mass of an element?

fgiga [73]

You take the mass number and subtract the number of neutrons

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2 years ago

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Describe how energy is transformed in the motor

grin007 [14]

<h2>Hope it's helpful for you ✌️✌️✌️✌️✌️</h2>

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3 years ago

Explain Alfred wegener's hypothesis

grandymaker [24]

He proposed the theory of Continental Drift. He believed that all of the continents were once joined together in a super continent he called Pangea (not sure if that's spelled right I studied this awhile ago). He proved this by showing similarities in fossils in completely different continents and showing how well the continents could fit together.

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3 years ago