Calculating Final Speed of a Car with Acceleration - Homework Solution

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The car initially travels at 90 km/h, which converts to 25 m/s. With a uniform acceleration of 0.26 m/s² over 35 seconds, the car gains an additional speed of 9.1 m/s. Adding this to the initial speed results in a final speed of 34.1 m/s. This final speed is equivalent to 123 km/h, confirming the calculations are correct. The answer should be presented in meters per second as the standard SI unit.
cbrowne
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Could some one please confirm my answer. Thanks

Homework Statement



A car was moving on the highway at a speed of 90 km/h. The driver then stepped
on the gas and started to accelerate uniformly at a rate of 0.26 m/s^2, and he was
able to overtake a truck in 35 s.

What was the final speed of the car after this
time?

Homework Equations





The Attempt at a Solution



90km = 25 m/s

0.26m/s^2 x 35sec = 9.1 m/s

Therefore, the car was originally traveling @ 25m/s and with acceleration it gained 9.1 m/s.


25 m/s + 9.1 m/s = 34.1 m/s--- converted to 123 km/h
 
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yes its correct. Leave your answer in m/s please. Its the S.I. unit for length and time.
 

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