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Lynna [10]
3 years ago
7

How does uniform motion relate to velocity and acceleration?

Physics
1 answer:
nekit [7.7K]3 years ago
8 0

-- Velocity is the speed and direction of motion.

-- Acceleration is any change of velocity ...
. . . speeding up, slowing down, or changing direction.

-- Uniform motion means no change ...
. . . straight line motion at constant speed
. . . constant velocity and zero acceleration.
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Suppose a parachutist is falling toward the ground, and the downward force of gravity is exactly equal to the upward force of ai
Serhud [2]

Answer:

Option b. is correct.

Explanation:

In the given question a parachutist is falling toward the ground .

Also, the downward force of gravity is exactly equal to the upward force of air resistance.

So, net force applied to the parachutist is equal to zero ( because both force acts in opposite direction ).

Now by first law of motion  :

An object will be in rest or in constant speed unless and until no external force is applied on it .

So, in the question the velocity of the parachutist is not changing with time.

Therefore, option b. is correct.

Hence, this is the required solution.

7 0
3 years ago
Which of of the following is a physical change ice melting into a puddle of water,Leaves changing color in fall, Or baking a cak
Tom [10]

Answer:

ice melting

Explanation:

Because once it melts you can change it back to ice.

4 0
3 years ago
HEEEYYYYY HELLO CAN YOU HELP ME WITH THIS ? PLEASE? ​
Lubov Fominskaja [6]

Answer:

Here are the names and symbols

H is Hydrogen

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Iron is Fe

Cl is Chlorine

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4 0
2 years ago
Which one has greater potential energy? An 8 kg rock sitting on a 2.2 m cliff or a 6 kg rock sitting on a 3.2 m cliff.
Evgesh-ka [11]

Answer: The 6 kg rock sitting on a 3.2 m cliff.

Explanation:

The potential energy of an object of mass M that is at a height H above the ground us:

U = M*H*g

where g is the gravitational acceleration:

g = 9.8m/s^2

Then:

"An 8 kg rock sitting on a 2.2 m cliff"

M = 8kg

H = 2.2m

U = 8kg*2.2m*9.8 m/s^2 = 172.48 J

"a 6 kg rock sitting on a 3.2 m cliff"

M = 6kg

H = 3.2m

U = 6kg*3.2m*9.8m/s^2 = 188.16 J

You can see that the 6kg rock on a 3.2m cliff has a larger potential energy.

6 0
3 years ago
What is the most likely reason that Mendeleev placed tellurium before iodine?
Ilya [14]
Mendeleev watched that tellurium has compound properties like different components in its gathering, and he didn't realize that neutrons cause the more noteworthy nuclear mass. Mendeleev expressed that he anticipated that tellurium would have a lower nuclear mass than iodine.
8 0
3 years ago
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