devinkool
Answered

Westonci.ca is the premier destination for reliable answers to your questions, provided by a community of experts. Experience the convenience of finding accurate answers to your questions from knowledgeable professionals on our platform. Experience the ease of finding precise answers to your questions from a knowledgeable community of experts.

Derek is riding his bike 10 mph. He takes 20 seconds to reach 15 mph. What is his acceleration?



0.25 mph/s


1.25 mph/s


4 mph/s


cannot be determined

Sagot :

austinde56

4 mph/s cause his change is 5mp in 20 seconds so do 20/5= 4 mph/s

                                                 

Answer: The correct answer is 0.25 mph/s.

Explanation:

The expression for the acceleration is as follows:

[tex]a= \frac{v-u}{t}[/tex]

Here, a is the acceleration, v is the final velocity and u is the initial velocity.

It is given in the problem that Derek is riding his bike 10 mph. He takes 20 seconds to reach 15 mph.

Calculate the acceleration.

Put t= 20 s, v= 15 mph and u= 10 mph in the above expression.

[tex]a= \frac{15-10}{20}[/tex]

[tex]a= 0.25 mph/s[/tex]

Therefore, his acceleration is 0.25 mph/s.

We hope our answers were helpful. Return anytime for more information and answers to any other questions you may have. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for choosing Westonci.ca as your information source. We look forward to your next visit.