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svetlana [45]
3 years ago
12

Calculate the vertical distance an object dropped from rest would cover in 12 seconds if it fell freely without air resistance

Physics
1 answer:
Nikolay [14]3 years ago
4 0

Answer:

705.6 m

Explanation:

time, t = 12 sends

initial velocity, u = 0

Acceleration due to gravity, g = - 9.8 m/s^2

As the object is falling freely so the initial velocity is zero.

Let the distance traveled by the body is h in time t  = 12 s.

Use second equation of motion

h = u t - 1/2  gt^{2}

Ad the distance is downwards so take it as negative

So, -h = 0 - 1/2\times 9.8 \times 12 \times 12

h = 705.6 m

Thus, the distance traveled in 12 second is 705.6 m

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Susie walks 3 blocks north to the local CVS store, then 4 blocks east to her grandmother’s house. She then walks 2 blocks west a
Slav-nsk [51]

Answer:

Suzie is 3 blocks north of where she started

Explanation:

Displacement is the minimum distance between the initial and final point of motion.

Here, Suzie first walks 3 blocks north. From there she walks 4 blocks east. Then 2 blocks to the east then 2 blocks north and then 2 blocks east. She covered 4 blocks east toward west. This is the same distance she covered traveling east. But she is 2 blocks north. From there she traveled a block south to the pizzeria and another block to her friends house. She covered the two block she had traveled north.

Hence, Suzie is 3 blocks north of where she started.

7 0
3 years ago
Which term is undefined?
tensa zangetsu [6.8K]

The term which is considered as being undefined is referred to as a point and is therefore denoted as option A in this context.

<h3>What is a Point?</h3>

This is defined as as small round mark written on a plane which signifies the position or location of a substance. This can also be seen as a dot and is also used to separate a group of numbers such as in the case of decimals etc.

It is referred to as being undefined alongside a plane, line etc as a result of it only being explained using specific examples and descriptions unlike a segment which can be viewed and understood easily when working on the parameter.

This is therefore the reason why a point is undefined and the most appropriate choice.

Read more about Point here brainly.com/question/17206319

#SPJ1

3 0
2 years ago
An object has a mass of 10grams and a volume of 20m3. what is the density of the object​
Pavlova-9 [17]

Explanation:

density = mass/ volume

in the question the mass is given in grams so will convert it into kg,

10 g = 0.01 kg

density= 0.01/ 20 = 1 / 2000 = 0.005 kg/m^3

7 0
3 years ago
HELP ME PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE A student uses a spring scale attached to a textbook to compa
aleksandrvk [35]

Answer:

1,860

Explanation:

4 0
3 years ago
A 1000-kg car traveling at 70 m/s takes 3 m to stop under full braking. the same car under similar road conditions, traveling at
azamat
We assume a=const (acceleration is constant. We apply the equation
v^2=v0^2+2as where s is the distance to stop v=0(m/s). We find the acceleration from this equation
a=-v0^2/(2s)=-70^2/(2*3) =-816.7 (m/s^2)&#10;
We know the acceleration, thus we find the distance necesssary to stop when initial speed is v=140 (m/s)
s=-v0^2/(2a) =140^2/(2*816.7)=12 (m)

5 0
4 years ago
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