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A particle was at rest from 1:a.m. it moved at uniform speed 50 km/he from 1:30a.m.to 2:00 a.m.find the average speed between 1:00a.m. to 2:00a.m.
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Most Upvoted Answer
A particle was at rest from 1:a.m. it moved at uniform speed 50 km/he ...
Solution:
Given:
Speed of the particle = 50 km/hr
Time interval from 1:00 a.m. to 1:30 a.m. = 0.5 hr
Time interval from 1:30 a.m. to 2:00 a.m. = 0.5 hr
Total time interval from 1:00 a.m. to 2:00 a.m. = 1 hr
Average speed = ?
Average speed is defined as the total distance travelled by the particle divided by the total time taken.
Total distance travelled by the particle from 1:30 a.m. to 2:00 a.m. = Speed × Time
= 50 km/hr × 0.5 hr
= 25 km
As the particle was at rest from 1:00 a.m. to 1:30 a.m., the total distance travelled by the particle from 1:00 a.m. to 2:00 a.m. = distance travelled from 1:30 a.m. to 2:00 a.m. = 25 km
Therefore, the average speed of the particle from 1:00 a.m. to 2:00 a.m. is given by:
Average speed = Total distance travelled / Total time taken
= 25 km / 1 hr
= 25 km/hr
Hence, the average speed of the particle from 1:00 a.m. to 2:00 a.m. is 25 km/hr.
Given:
Speed of the particle = 50 km/hr
Time interval from 1:00 a.m. to 1:30 a.m. = 0.5 hr
Time interval from 1:30 a.m. to 2:00 a.m. = 0.5 hr
Total time interval from 1:00 a.m. to 2:00 a.m. = 1 hr
Average speed = ?
Average speed is defined as the total distance travelled by the particle divided by the total time taken.
Total distance travelled by the particle from 1:30 a.m. to 2:00 a.m. = Speed × Time
= 50 km/hr × 0.5 hr
= 25 km
As the particle was at rest from 1:00 a.m. to 1:30 a.m., the total distance travelled by the particle from 1:00 a.m. to 2:00 a.m. = distance travelled from 1:30 a.m. to 2:00 a.m. = 25 km
Therefore, the average speed of the particle from 1:00 a.m. to 2:00 a.m. is given by:
Average speed = Total distance travelled / Total time taken
= 25 km / 1 hr
= 25 km/hr
Hence, the average speed of the particle from 1:00 a.m. to 2:00 a.m. is 25 km/hr.
Community Answer
A particle was at rest from 1:a.m. it moved at uniform speed 50 km/he ...
Total distance covered between 1 am to 2 am = 0 km + 50km/h ×1h÷2= 25 km
total time taken = 1 h
average speed = 25 km÷1h= 25km/h
THUS THE AVERAGE SPEED OF THE PARTICLE FROM 1 AM TO 2 AM IS 25km/h
total time taken = 1 h
average speed = 25 km÷1h= 25km/h
THUS THE AVERAGE SPEED OF THE PARTICLE FROM 1 AM TO 2 AM IS 25km/h
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