A spark timer runs and produces a tape with dots marking its fall. Develop a met

Question

A spark timer runs and produces a tape with dots marking its fall.

Develop a method to determine the velocity for each point. Note that v=ds/dt can be approximated as v = ?s/?t where ?s is some finite span of distance and ?t is some finite length of time.

a) Describe a method for determining the velocity = ?s/?t at each point.


b) At the start of the tape, the dots are close together. As the object falls, the dots get further apart. What does this tell you about the velocity of the object with respect to time?

Thank you, will give lifesaver!!!!!

Explanation / Answer

a) the spark comes at a constant time interval, so the average speed between two spots is the distance divided by the time between consecutive sparks. For eample, if the machine sparks ten times per second and two burn marks are 2cm apart, the average speed is 0.02m/0.1s = 0.2 m/s b) the burn marks get further apart because the object goes farther and farther during each time interval. This means that the object is spedding up as it falls. This means that it is accelerating.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

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