# Physics

A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 11.9 s and t = 16.9 s.
The answer here is 1.30 m/s

I need help with:
What is the magnitude of the instantaneous velocity at t = 11.9 s?

What is the magnitude of the instantaneous acceleration at t = 16.9 s?

Thanks.

1. 👍 0
2. 👎 0
3. 👁 116
1. Constant v = 2πR/T=2π•7.3/34 = 1.3 m/s
Constant centripetal acceleration is
a=v²/R =1.3²/7.3 = 0.23 m/s²

1. 👍 0
2. 👎 0
posted by Elena

## Similar Questions

1. ### physics

Motion in a Circle A particle P travels with constant speed in a circle of radius 5.6 m and completes one revolution in 36.0 s. The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the

asked by AK on September 18, 2009
2. ### Physics

A particle P travels with constant speed in a circle of radius 7.3 m and completes one revolution in 34.0 s (see Figure). The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval

asked by Lina on December 17, 2013
3. ### Physics

A particle P travels with constant speed in a circle of radius 8.6 m and completes one revolution in 12.0 s. The particle passes through O at t = 0 s. What is the magnitude of the average velocity during the interval from t = 5.4

asked by Anonymous on September 22, 2009
4. ### Physics

A particle travels 15 times around a 10-cm radius circle in 42 seconds. What is the average speed (in m/s) of the particle? = I think I use the v=(2pi*r)/T equation? Right?

asked by Mark on March 13, 2012
5. ### Physics

A 0.500 kg particle moves in a circle of R=0.0150 m at constant speed. The time for 20 complete revolutions is 31.7 s. What is the period T of the motion? What is the speed of the particle? What is the centripetal acceleration of

asked by Nancy on March 5, 2013
6. ### PHYSICS

When a particle moves on a circle at constant speed, its acceleration vector: a) is zero m/s^2 b) points toward the center of the circle. c) points parallel to its velocity vector. It's zero m/s^2 since it's moving at a constant

asked by Technoboi11 on February 18, 2007
7. ### Physics

(a)A car travels exactly once around a circle of radius 5.0 m at constant speed of 3.0 m/s. What is the car’s average velocity (magnitude and direction) during this interval? Explain/justify. (b)Repeat the calculation of average

asked by Sonya on September 19, 2009
8. ### Physics

A particle rotates in a circle with centripetal acceleration a = 8.8 m/s2 . What is a if the radius is doubled without changing the particle's speed? What is a if the speed is doubled without changing the circle's radius?

asked by Shiv on October 12, 2015
9. ### physics

In the figure below, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at

asked by Natasha on February 21, 2012
10. ### Physics

In the figure below, an object, after being released from its circular path, travels the distance OA in the same time it would have moved from O to P on the circle. The speed of the object on and off the circle remains constant at

asked by Donald on November 6, 2012

More Similar Questions