Question

A boy runs from point E to point F of a 150 m straight track in minute. He then turns around and runs back 60 m to point G in 40 s. What is (i) average speed (ii) average velocity of the boy between (a) E and F, (b) E and G

Answer 1

Answer:

Take it as an example and solve your question by own

Explanation:

From pont A to B

Distance covered=300m

Displacement=300m

Time taken=2 min 30 sec=(2×60)+30=150 sec

Average speed=TimetakenDistance covered=150300=2 m/sec

Average velocity=TimetakenDisplacement=150300=2 m/sec

From point A to C

Distance covered=300+100=400m

Displacement=300−100=200m

Time taken=3 min 30 sec=(3×60)+30=210 sec

Average speed=TimetakenDistance covered=210400=1.90 m/sec

Average velocity=TimetakenDisplacement=210200=0.95 m/sec