Question

If a car is traveling at 15 mph and increases to a speed of 45 mph in 10 seconds, what is the acceleration? A. 30 mph B. 3 mph C. 3 mph/s D. 30 mph/s

Answer 1

C
Final velocity - initial velocity/Time
45 mph - 15 mph/10 secs
30 mph/10 secs
3 mph/s is the acceleration

NOTE: I truly apologize if my answer is incorrect. I still hope this helped! :) (a brainliest would be much appreciated!)

Answer 2

The acceleration will be "3 mph/s".

According to the question,

Final velocity,

• 45 mph

Initial velocity,

• 15 mph

Time,

• 10 sec

As we know the formula,

→ $Acceleration =\frac{Final \ velocity-Initial \ velocity}{Time}$

By substituting the values, we get

→                       $= \frac{45-15}{10}$

→                       $= \frac{30}{10}$

→                       $= 3 \ mph/s$  

Thus above answer is right.

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