Saved A clay ball and a rubber ball have equal masses. A student releases each ball from rest from the same height. The clay ball sticks to the ground while the rubber ball bounces back up. The magnitude of the impulse delivered to the rubber ball by the floor is ...

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Answer 1

Answer:

Answer:

Explanation:he ball bounces back up with nearly the same speed as it hit. i don,t know if is right

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1 . A farmer moves along the boundary of his rectangular field of side 10m x 20m . farmer covers 1m in 1sec . what will be the magnitude of displacement at the total distance travelled.2 . Rahul pedals his cycle from rest. Pedals his cycle to get a
velocity of 10 ms-1 in 30 seconds.
then he applies brakes in such that the velocity of the cycle comes does to 6
ms-1 in next 5 seconds . calculate
the acceleration and deceleration .

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1). He's walking the 'perimeter' of his field, meaning 'the distance all the way around'.
If he stays right along the fence all the way, then the total distance he walks is
(10 + 20 + 10 + 20) = 60 meters. (It's a small field ... about 5% of an acre.)
The magnitude of displacement is the distance between the start point and end point,
regardless of the route. After he finishes one whole trip around, his displacement is
zero, because he ends up at the same place where he started.
Notice the big fat red herring in the question: None of this depends on the speed
at which he walks.

2). Acceleration = (change in speed) / (time for the change)

While speeding up, acceleration = (10 - 0) / 30 = 1/3 meter per second².

While slowing down, deceleration = (6 - 10) / 5 = -4/5 = -0.8 meter per second²

What is the name for a star and planets held together by gravity? A. solar system B. galaxy C. black hole D. supernova

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These answers aren´t valid .

The correct answer will be:

Planetary system.

If a ball is tossed straight up into the air, at what position is its potential energy the greatest?A.when it reaches the top of its flight
B.when it first leaves your hand
C.when it approaches the top of its flight
D.when it begins to fall back to your hand.
Please Help
.

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Answer:

A.when it reaches the top of its flight

Explanation:

The potential energy of an object is given by:

$U=mgh$

where

m is the mass of the object

g is the acceleration of gravity

h is the heigth at which the object is located above the ground

Therefore, we see that the higher the object, the larger its potential energy: this means that the ball will have the greatest potential energy at the top of its trajectory.

A. when it reaches the top of its flight

potential energy increases as the height of the object does, and the highest point of a ball's flight is when it reaches the top.

Katya listed major questions that scientists try to answer when they classify organisms. Her list included the following questions: How many living things are there? What are the characteristics that define living things? What additional question would be best for Katya to add to her list about classification? How do living things get energy? What do living things need to survive? Where do living things make their home? How are living things related?

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An ecosystem can only sustain so many organisms. That limit would be its carrying capacity. If the population goes above that number then other factors will cause the population to crash and then rebound to a constant level.

Answer:

an ecosystem can only certain so many organisms.

What would happen to the moon if earth stopped exerting the force of gravity on it?

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There are two equal forces of gravity between the Earth and the Moon.
One force pulls the Moon toward the Earth.
The other force pulls the Earth toward the Moon.

If only this gravity suddenly switched off, then the moon would
continue to orbit the Sun, very much as it does now.

If ALL gravity suddenly switched off, then . . .

-- the Moon would stop orbiting the Earth and would sail away, in
a straight line and at the speed it had when gravity disappeared;

-- the Earth would stop orbiting the Sun and would sail away, in
a straight line and at the speed it had when gravity disappeared;

-- all the gases surrounding the Earth ... which we call "air" ... would
start drifting away, and expanding into a giant cloud of gas, and stop
being an atmosphere;

-- the Sun would completely fall apart, expand into a giant cloud of gas,
and stop being a star.

The moon will stop orbiting and will fly away and never stop running

A 70kg person travels to a planet where he weighs 1750 N. What is the value of g on the that planet?

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25 m/s^2 which is lethal for a human.

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