A vehicle moves for 10 minutes at 20ms^(-1) due north and stops for five minutes. Then at continues due north at 40ms^(-1) for 20 minutes. Average velocity in the entire journey.

A vehicle moves for 10 minutes at 20ms^(-1) due north and stops for fi

1.	A vehicle moves for 10 minutes at 20ms^(-1) due north and stops for five minutes. Then at continues due north at 40ms^(-1) for 20 minutes. Average velocity in the entire journey.
Answer» `2.857ms^(-1)` `285.7ms^(-1)` `28.57ms^(-1)` `2857ms^(-1)` ANSWER :C