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Lyrx [107]
3 years ago
7

An initially stationary object experiences an acceleration of 6 m/s2 for a time of 15 s. How far will it travel during that time

?
But use this formula with the steps: x = xo + vo t + ½ a t 2
Physics
1 answer:
Tju [1.3M]3 years ago
5 0

Answer:

675m

Explanation:

Given parameters:

Initial velocity  = 0m/s

Acceleration  = 6m/s²

Time  = 15s

Unknown:

Distance traveled by the body = ?

Solution:

To solve this problem; we use the expression;

   S = ut + \frac{1}{2}at²

 Where u is the initial velocity

              t is the time

             a is the temperature

         

Insert the parameters and solve;

  S = 0 x 15 + \frac{1}{2} x 6 x 15²  

  S = 675m

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Sally is on a canoe that comes to a stop a small distance from the dock. Since it is such a small distance, Sally decides to jum
natita [175]

Answer:

 v₂> v₃  velocity canoe is more than velocity fishing boat

Explanation:

For this exercise we must define a system consisting of the girl, Sally and the boat, in one case the canoe and in the other the fishing boat; for this system we can use moment conservation

Initial moment. Before the jump

           p₀ = (M + m₂) v

Final moment. After the jump

          p_{f} = M v₁ - m₂ v₂

Where m and v are the masses and speed of the canoe

          p₀ = p_{f}

          (M + m₂) v = M v₁ - m₂ v₂

In the case of changing the canoe for the heaviest fishing boat, the final moment is

          p_{f} = M v₁ - m₃ v₃

          p₀ = p_{f}

           (M + m₃) v = M v₁ - m₃ v₃

Since the canoe is stopped the speed v = 0, we write the speed of each boat

Canoe

          0 = M v₁ - m₂ v₂

          v₂ = M / m₂ v₁

Fishing boat

        0 = M v₁ - m₃ v₃

        v₃ = M / m₃ v₁

Since the masses of the fishing boat (m₃) is greater than the mass of the canoe (m₂) the speed of the fishing boat is less than the speed of the canoe, we can find the relationship between the two speeds

        v₂ / v₃ = m₃ / m₂

Here you can see what  v₂> v₃  velocity canoe is more than velocity fishing boat

8 0
3 years ago
The actions of an employee are not attributable to the employer if the employer has not directly or indirectly encouraged the em
zepelin [54]

Answer:    the answer is d

Explanation: there are not more than 10 violations  within a twelve month period hope this helps

4 0
3 years ago
What are machines fueled by?
Ilia_Sergeevich [38]
(AB) & (CD)
Most machines are fueled by gasoline and electricity
3 0
3 years ago
Read 2 more answers
Which of the following occurs first in the generation of an action potential?
spayn [35]
It seems that you have missed the necessary options for us to answer this question so I had to look for it. Anyway, here is the answer. The one that occurs first in the generation of an action potential is that t<span>he membrane depolarizes. Hope this answers your question. Have a great day!</span>
7 0
3 years ago
g A 5.60-kilogram hoop starts from rest at a height 1.80 m above the base of an inclined plane and rolls down under the influenc
swat32

Answer:

4.24m/s

Explanation:

Potential energy at the top= kinetic energy at the button

But kinetic energy= sum of linear and rotational kinetic energy of the hoop

PE= mgh

KE= 1/2 mv^2

RE= 1/2 I ω^2

Where

m= mass of the hoop

v= linear velocity

g= acceleration due to gravity

h= height

I= moment of inertia

ω= angular velocity of the hoop.

But

I = m r^2 for hoop and ω = v/r

giving

m g h = 1/2 m v^2 + 1/2 (m r^2) (v^2/r^2) = 1/2 m v^2 + 1/2 m v^2 = m v^2

and m's cancel

g h = v^2

Hence

v= √gh

v= √10×1.8

v= 4.24m/s

4 0
3 years ago
Read 2 more answers
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