Question

A+car+travels+along+a+straight+road+to+the+east+for+100+meters+in+4+seconds,+then+go+to+west+for+50+meters+in+one+second.+Determine+the+average+speed+and+average+velocity.

Answer 1

$\huge{\underline{\tt{\red{Answer-}}}}$

average speed = 30m/s

average velocity = 10m/sec.

$\huge{\underline{\tt{\green{Given-}}}}$

The car goes 100 metres in the east direction,in 4 seconds.

The car goes 50 metres in the west direction,in 1 second.

$\huge{\underline{\tt{\blue{Solution-}}}}$

average speed = (100 m + 50 m)/(4sec + 1sec) = (150m/5sec) = 30m/s

Here,east and west are opposite directions.

displacement = 100 m - 50 m = 50 m in east direction

Average velocity = 50m/5sec = 10m/sec