Question

1. A car moves 20 m/s east for 5 sec, 10m/s north for 10 sec and then 30m/s west for 5 sec. Calculate a) displacement

b) average velocity
2. A cyclist ride his half journey at 10 m/s and the rest at 8 m/s. calculate his average speed.

please help me. i will help back​

Answer 1

Try the solutions described in the attached picture, note the answers are marked with green colour.