Sam jogs at an average speed of 2.00 m/s over a distance of 20.0 m. and then slo

Question

Sam jogs at an average speed of 2.00 m/s over a distance of 20.0 m. and then slows down and walks at an average speed of 1.00 m/s for the next 20.0 m. During the complete time interval, his average speed is equal to 1.50 m/s because average speed is always equal to the average of the initial and final speeds. is not equal to 1.50 m/s because average speed is never equal to the average of the initial and final speeds. is equal to 1.50 m/s because Sam travels the same distance for the two intervals. is not equal to 1.50 m/s because the two time intervals have different duration. Average speed = m/s

Explanation / Answer

average speed = total distance / total time

= 40 / (t1+t2)

= 40 / (20/2 + 20/1)

= 40 / 30

= 1.33m/s

Related Questions

Navigate

• Browse (All)
• Browse S
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.