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3 years ago

The amount of kinetic energy a moving object has depends on its mass and its

Physics

2 answers:

Orlov [11]3 years ago

7 0

Kinetic energy depends on mass and speed (or magnitude of velocity).

K.E. = 1/2 M S²

Lady bird [3.3K]3 years ago

7 0

The amount of kinetic energy of a moving object has dependence on its mass and its velocity.

Further explanation:

The possession of energy in a body due to its motion is known as the kinetic energy of that body.

Concept used:

The capacity of a body to do work is known as its energy. Energy can be in any form either chemical energy, potential energy, mechanical energy, etc.

Law of conservation of energy states energy can neither be destroyed nor be created. It can only be transformed from one form of energy to other form.

Example: A cyclist ride a bicycle in this chemical energy is converted into mechanical energy, etc.

There are different types of energy:

• Potential energy: The possession of energy due to the height of the object is called potential energy. It also depends on the mass of the object and acceleration due to gravity.

• Kinetic energy: the possession of energy due to the motion of the body is known as its kinetic energy. It is also defined as the product of mass and the square of its velocity.

The expression for the kinetic energy is given as.

$\fbox{\begin\\K=\dfrac{1}{2}m{v^2}\end{minispace}}$

Here, $m$ is the mass of the object, $v$ is the velocity of the object and $K$ is the kinetic energy of the object.

Above expression indicates that the kinetic energy is directly proportional to the mass of the object and to the square of the velocity of the object.

Thus, the kinetic energy of a moving object has dependence on its mass and its velocity.

Learn more:

1. Transnational kinetic energy brainly.com/question/9078768.

2. Motion under friction brainly.com/question/7031524.

3. Conservation of momentum brainly.com/question/9484203.

Answer Details:

Grade: High School

Subject: Physics

Chapter: Kinematics

Keywords:

Energy, kinetic energy, potential energy, mechanical energy, conversion, mass, velocity, height, acceleration due to gravity, capacity, work .

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lesantik [10]

Answer:

(1) 2 ohms

(2) 12 Volts Across each resistor

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Explanation:

From the question,

(1) Equilvalent Resistance (Rt) for parallel connection is

1/Rt =(1/R₁)+ (1/R₂) + (1/R₃)

Where R₁ = 4 ohms, R₂ = 6 ohms, R₃ = 12 ohms

1/Rt = 1/4 +1/6 +1/12

1/Rt = (3+2+1)/12

1/Rt = 6/12

1/Rt = 1/2

Rt = 2 ohms.

(2) Since the resistors are connected in parallel, They will have the same potential difference across them,

Hence the P.d across each resistor = 12 Volts.

(3) For R₁,

I₁ = V/R₁ = 12/4

I₁ = 3 A.

For R₂,

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I₂ = 12/6

I₂ = 2 A

For R₃,

I₃ = V/R₃

I₃ = 12/12

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3 years ago

A car is traveling at a 20.0 m/s for 7.00 s and then suddenly comes to a stop over a 3 s period.

Delicious77 [7]

Answer: A) Deceleration of the car is -6.6667 m/s² while it came to stop.

B) The total distance the car travels is 200 meter during the 10 s period.

Explanation:

Given Data

Initial velocity of the car ( $v_{i}$ ) = 20.0 m/s

Final velocity of the car ( $v_{f}$ ) = 0 m/s

Time (in motion) =7.00 s

Time (in rest) =3 s

To find - A) car's deceleration while it came to a stop

B) the total distance the car travels in 10 s

A) The formula to find the deceleration is

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Deceleration = (( $v_{f}$ ) - ( $v_{i}$ )) ÷ time (m/s²)

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B) The formula to find the distance traveled by the car is

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3 years ago

A tennis player smashes a ball of mass m horizontally at a vertical wall. The ball rebounds at the same speed v with which it st

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Answer:

B.0

Explanation:

Change in momentum: This is defined as the product of mass and change in velocity of a body. or it can be defined as the product of force and time of a body. The fundamental unit of change in momentum is kg.m/s

Change in momentum = M(V-U)......................... Equation 1

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