Verified answer

Answer:

To find the change in kinetic energy and the work done to change the car's velocity, you can use the following formulas:

1. Change in Kinetic Energy (ΔKE):

ΔKE = 0.5 * m * (vf^2 - vi^2)

Where:

- ΔKE is the change in kinetic energy.

- m is the mass of the car (2000 kg).

- vf is the final velocity (100 km/hr converted to m/s).

- vi is the initial velocity (25 km/hr converted to m/s).

2. Work Done (W):

W = ΔKE

Let's calculate it step by step:

First, convert the velocities from km/hr to m/s:

- Initial velocity (vi) = 25 km/hr = (25 * 1000 m) / (3600 s) = 6.94 m/s (rounded to two decimal places).

- Final velocity (vf) = 100 km/hr = (100 * 1000 m) / (3600 s) = 27.78 m/s (rounded to two decimal places).

Now, plug these values into the formulas:

1. ΔKE = 0.5 * 2000 kg * (27.78 m/s)^2 - (6.94 m/s)^2)

2. ΔKE = 0.5 * 2000 kg * (771.88 m^2/s^2 - 48.13 m^2/s^2)

3. ΔKE = 0.5 * 2000 kg * 723.75 m^2/s^2

4. ΔKE = 723750 J (joules)

So, the change in kinetic energy is 723750 joules, and this is also the work done to change the car's velocity.

Answer:

प्र-3 निम्नलिखित प्रश्नों के उत्तर 25 से 30 शब्दों में दें-

-

1- उपभोक्ता वादी संस्कृति ने भारतीय संस्कृति को चोट किस प्रकार पहुंचाई है?

2- पाँच सितारा सुविधाओं का उपभोग करने की लालसा आज क्यों बढ़ गई है?

3-उपभोक्तावादी संस्कृति पर संक्षेप में अपने विचार व्यक्त करें।

4- वर्तमान परिप्रेक्ष्य में बदली सुख की व्याख्या स्पष्ट कीजिये ?

Explanation:

yes yes dear ofc

so hru?! im good