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KatRina [158]
3 years ago
11

Define mechanical energy useing the example of the skateboarder on the half-pipe explain how kinetic and potential energy relate

to the mechanical energy at diffrent positions
Physics
1 answer:
sergejj [24]3 years ago
7 0
When some one balance skate board on pipe the potential energy is responsible to make it slide beacause of m mass and g gravity and height thus the skate boarder concieves mgh potential energy and moving on pipe with balancing himself using kinetic enrgy ie;1/2 mv^2 and thus gauning speed ..for illustrating well there is a another example the two wheeeler gets balanced while moving instead of standing idle or stationary ie; kinetic energy is responsible for balancing
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Which of the following are examples of centripetal acceleration? Check all that apply.
k0ka [10]

<u>Answer:</u> The correct answer is option B, C and E.

<u>Explanation:</u>

Centripetal acceleration is defined as the acceleration win which an object moves in a curved path. Formula for this acceleration is given by the equation:

a_c=\frac{v^2}{r}

where,

a_c = centripetal acceleration

v = linear speed of the object

r = radius of the curved path

From the given options,

Option A: As, the golf ball is not moving in a curved path. Hence, it is not an example of centripetal acceleration.

Option B: As, a car is moving in a curved path. Hence, it is an example of centripetal acceleration.

Option C: As, a person is moving in a curved path. Hence, it is an example of centripetal acceleration.

Option D: As, a car is not moving in a curved path and is moving in a straight road. Hence, it is not an example of centripetal acceleration. The car is moving with zero acceleration because the direction of the car is not changing.

Option E: As, a bicyclist is moving in a curved path which is around the lake. Hence, it is an example of centripetal acceleration.

6 0
3 years ago
I’m a god, a planet, and I measure heat. What am I?
Leno4ka [110]

mercury??????? my only guess

8 0
2 years ago
What is the state of matter that consists of a gas-like mixture of free electrons and nucle of atoms that have been stripped of
monitta
I think the answer is plasma which is a fourth state of matter.
5 0
3 years ago
In the standing broad jump, one squats and then pushes off with the legs to see how far one can jump. Suppose the extension of t
muminat
<h2><em><u>⇒</u></em>Answer:</h2>

In the standing broad jump, one squats and then pushes off with the legs to see how far one can jump. Suppose the extension of the legs from the crouch position is 0.600 m and the acceleration achieved from this position is 1.25 times the acceleration due to gravity, g . How far can they jump? State your assumptions. (Increased range can be achieved by swinging the arms in the direction of the jump.)

Step-by-Step Solution:

Solution 35PE

This question discusses about the increased range. So, we shall assume that the angle of jumping will be  as the horizontal range is maximum at this angle.

Step 1 of 3<

/p>

The legs have an extension of 0.600 m in the crouch position.

So,  m

The person is at rest initially, so the initial velocity will be zero.

The acceleration is  m/s2

Acceleration  m/s2

Let the final velocity be .

Step 2 of 3<

/p>

Substitute the above given values in the kinematic equation  ,

m/s

Therefore, the final velocity or jumping speed is  m/s

Explanation:

3 0
3 years ago
Read 2 more answers
A test rocket is launched vertically from ground level (y=0), at time t=0.0s. The rocket engine provides constant upward acceler
Luden [163]

From the definition of average velocity,

\bar v=\dfrac{\Delta y}{\Delta t}=\dfrac{49\,\mathrm m}t,

and the fact that constant acceleration means

\bar v=\dfrac{v_f+v_0}2=\dfrac{30\,\frac{\mathrm m}{\mathrm s}}2=15\,\dfrac{\mathrm m}{\mathrm s}

we can solve for the time t:

15\,\dfrac{\mathrm m}{\mathrm s}=\dfrac{49\,\mathrm m}t\implies t=3.3\,\mathrm s

7 0
2 years ago
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