I need help with questions 11 and 12. For question 12 could you also tell me which direction is the object is going? 10.The position of a 25 kg robot that is moving along a straight track in the x directionis given by the function x(t) = (0.002 m/s4)+4+(-0.08 m/s³)t³+ (0.8 m/s²)t² between the timest = 0 and t = 20s. This function is shown in the graph below.candent(a) Describe what is going on near t = 10 s.11.(b) What is the average speed of the robotduring the first 10 s?12.(c) What is the average speed of the robotover the entire 20 s?Tuo tuomor1 66What is the velocity of the ob-ject shown in the motion diagram to the rightposition (m)if the total time interval recorded was 4.0 s201and the vertical lines mark off 4.0 m intervals?20(The final position is where the large mark is.The small dot at the other end shows whereit started. The small dots show its prior posi-tions at half-second intervals.)15-10505time (s)(a) What is the average speed of the athlete over one full repetition of this exercise?levererto bu(b) What is the average velocity of the athlete over one full repetition of this exercise?|·|10novia sus voYemin 7)A practice exercise for athletes on a track team is to sprint 100 m along a straightsection of the track and then immediately turn around and jog back to their starting position.An athlete completes the sprint in 14s and then jogs back at an average speed of 2.9 m/s.1520

11. A practice exercise for athletes on a track team is to sprint 100 m along a straight section of the track and then immediately turn around and jog back to their starting position. An athlete completes the sprint in 14s and then jogs back at an average speed of 2.9 m/s. (a) What is the average speed of the athlete over one full repetition of this exercise? br(b) What is the average velocity of the athlete over one full repetition of this exercise? 12. What is the velocity of the ob- ject shown in the motion diagram to the right if the total time interval recorded was 4.0 s and the vertical lines mark off 4.0 m intervals? (The final position is where the large mark is. The small dot at the other end shows where it started. The small dots show its prior posi- tions at half-second intervals.) || ||||

11. A practice exercise for athletes on a track team is to sprint 100 m along a straight section of the track and then immediately turn around and jog back to their starting position. An athlete completes the sprint in 14s and then jogs back at an average speed of 2.9 m/s. (a) What is the average speed of the athlete over one full repetition of this exercise? br(b) What is the average velocity of the athlete over one full repetition of this exercise? 12. What is the velocity of the ob- ject shown in the motion diagram to the right if the total time interval recorded was 4.0 s and the vertical lines mark off 4.0 m intervals? (The final position is where the large mark is. The small dot at the other end shows where it started. The small dots show its prior posi- tions at half-second intervals.) || ||||

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter6: Motion In Two Dimensions

Section6.3: Relative Velocity

Problem 27PP

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