1.

A bird flies 6 km towards east, and then flies 8 km towards north. If the magnitude of its average velocity for the entire motion is 15 m/s, find its average speed during this period.

Answer»

21 m/s

Explanation:

here displacement = SQRT( 8^2+6^2)=10

time taken= 10/15=2/3 s

average speed=distance travelled / time taken

distance travelled= 6+8=14 m

avg speed= 14/(2/3)=14*3/2=21 m/s



Discussion

No Comment Found

Related InterviewSolutions