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3 years ago

What is the final velocity?

2 answers:

6 0

Initial velocity describes how fast an object travels when gravity first applies force on the object. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration.

Reil [10]3 years ago

5 0

The final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration

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Which statement is TRUE?

Salsk061 [2.6K]

Statement B is true.

3 0

4 years ago

Read 2 more answers

f we apply an electrical stimulus to a muscle cell to cause it to contract, the magnitude of that stimulus must be strong enough

kondor19780726 [428]

Answer:

critical value is known as threshold

Explanation:

solution

when we apply electrical stimulus to the cell of muscle

then magnitude of stimulus will be strong enough for reaching the critical value

and this critical value is threshold because when the size of an stimulus change in requirement for the detection, this is called the threshold

but if change is done by without stimulation then there threshold stimulus is absolute threshold

so correct answer is threshold

4 0

3 years ago

A bullet moving at a speed of 152 m/s passes through a plank of wood at 128m/s. Another bullet moving at 97m/s passes through th

Ivahew [28]

Answer:

The speed of the plank is 81.68 m/s

Explanation:

Given that,

Speed of bullet = 152 m/s

Speed of wood = 128 m/s

Speed of another bullet = 97 m/s

We need to calculate the speed of plank

Using conservation of momentum

$m_{1}u_{1}=(m_{1}+m_{2})v$

Where,

u = initial velocity

v = final velocity

$152m_{1}=(m_{1}+m_{2})128$ ....(I)

$m_{1}97=(m_{1}+m_{2})v$ ....(II)

From equation(I) and equation(II)

$\dfrac{152}{97}=\dfrac{128}{v}$

$= \dfrac{128\times97}{152}$

$v=81.68\ m/s$

Hence, The speed of the plank is 81.68 m/s

4 0

4 years ago

A child walks 5m east, then 3m north, then 1m east. What is the magnitude of the child's displacement? What is the direction of

kykrilka [37]

You should first break up all the distances and directions into vectors and then add all horizontal vectors and verticle vectors.
He goes, 5 + 1 m east = 6m East
3 m north
displacement = root(6^2 + 3^2) = 6.708m
direction = arcTan(verticle/horizontal) = arcTan(3/6) = 26.565 degrees

7 0

3 years ago

The________ channels sound to the eardrum.

inn [45]

The external auditory meatus, or ear canal, funnels sound to the eardrum. It is part of the outer ear.

6 0

3 years ago