20 quantities and classified them in vector and scaler quantities

A scalar quantity is defined as the physical quantity that has only magnitude, for example, mass and electric charge. On the other hand, a vector quantity is defined as the physical quantity that has both magnitude as well as direction like force and weight.

the device is called “ rocket engine”

total distance/total time

(85 + 82)/(5+3)

167/8

20 just over