A car runs a constant speed on a circular track of radius
100 m, taking 62.8 s for every circular loop. The average
Velocity and average speed for each circular loop
respectively are
(a) 10 m/s, 0
(b) 0,0
(c) 0,10 m/s
(d) 10 m/s,
Answers
Given:
Radius of circular path R= 100 m
To find: Average velocity and Average speed
Average velocity = Displacement/time
Average Speed = Distance travelled/time
If car makes a round on a circular track, it returns to point where it started. so displacement becomes zero.
so Average Velocity is 0
Distance travelled is the circumference of circular track
Average Speed = (2πR)/t = 2× 3.14×100/62.8= ..........m/s
Fill in the blank for your answer !
Answer:
C) 0,10m/s
Solution :
Average velocity is defined as the ratio of displacement to time taken while the average speed of a particle in a given interval of time of defined as the ratio of distance travelled to the time taken.
On a circular path in completing one turn, the distnce travelled is 2πr while displacement is zero.
Hence, average velocity =displacement/time interval
=0/t
=0m/s
Average speed =Distance/time interval
=2πr/t
=2×3.14×10062.8
=10m/s
Explanation: