Question

solve it on paper 11b)​

Answer 1

Answer:

For average speed use

2v1v2/v1+v2

v1 = initial velocity

v2 = final velocity

On putting the values

2*20*40/60

160/6

80/3km/h

Hope it helps

Answer 2

Average=sum of terms/no. of terms

=40+20/2 km/h

=60/2 km/h

=30 km/h

hope it helps and please follow kar lena yar ...

btw u have cutee dp