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4 years ago

In order for an object to have kinetic energy it must have a mass and a ?

Physics

1 answer:

almond37 [142]4 years ago

8 0

Answer:

Velocity

Explanation:

The mechanical energy of the body is defined as the sum of the potential energy and kinetic energy.

E = P.E + K.E

The potential energy of a body is due to the height from the surface of the earth.

P.E = mgh

The kinetic energy of the is possessed by the body due to the virtue of its motion,

K.E = ½ mv²

If there is no velocity associated with the body, there is no K.E in the body.

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You are driving a metric car that has a speedometer that displays in meters per second. When you look down at your speedometer,

Otrada [13]

Answer:

0.33m/s²

Explanation:

Given parameters:

Initial velocity = 19.9m/s

Final velocity = 4.4m/s

Time = 47.6s

Unknown:

Acceleration = ?

Solution:

To solve this problem, we use the expression below:

Acceleration = $\frac{v - u }{t}$

v is the final velocity

u is the initial velocity

t is the time taken

Acceleration = $\frac{4.4 - 19.9}{47.6}$

Acceleration = -0.33m/s²

This is a deceleration

6 0

3 years ago

A pendulum consists of a 0.3 kg mass at the end of a string. The pendulum is raised to a height of 0.26 m and released. When the

Debora [2.8K]

The total energy of the Pendulum-Earth system is equal to 1.54416 Joules.

<u>Given the following data:</u>

Mass = 0.3 kg

Height = 0.26 meter.

Velocity = 2.28 m/s.

<u>Scientific data:</u>

Acceleration due to gravity on Earth = 9.8 $m/s^2$

To calculate the total energy of the Pendulum-Earth system:

<h3>How to calculate total energy.</h3>

The total energy possessed by this Pendulum-Earth system is equal to the sum of both the potential energy and kinetic energy at its lowest point.

Mathematically, the total energy is given by this formula:

$E = mgh + \frac{1}{2} mv^2$

Substituting the given parameters into the formula, we have;

$E = 0.3 \times 9.8 \times 0.26 + \frac{1}{2}\times 0.3 \times 2.28^2\\\\E=0.7644+0.77976$

E = 1.54416 Joules.

Read more on kinetic energy here: brainly.com/question/17081653

6 0

2 years ago

Which calculation is an example of velocity

Dmitry_Shevchenko [17]

Answer:

Yes

Explanation:

sun rays towards the earth is an example of velocity

3 0

3 years ago

Read 2 more answers

Rahim and john were two friends. once rahim went to visit the new house of john . to expel hot air out of the kitchen, john fitt

4vir4ik [10]

Answer:

i don't know how to explain it but I think it's just the way you do it by yourself

6 0

3 years ago

Why are there multiple versions of the scientific method?

qwelly [4]

Answer:

If the experiment works and the data is analyzed you can either prove or disprove your hypothesis.

Explanation:

5 0

3 years ago