Physics

To calculate the power developed by the car's engine at the 5-second mark, we will follow these steps:

Calculate the acceleration of the car

The car starts from rest, so the initial velocity is . The final velocity after 10 seconds is . The time taken is .

 

Using the equation for constant acceleration:

Substitute the values:

 

Calculate the velocity at the 5-second mark

At , we can use the equation for velocity with constant acceleration:

Substitute the known values:

Thus, the velocity at the 5-second mark is .

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