Question

Analyse Table 6.1 and complete it suitably. Situation State of motion State of rest A passenger in a moving bus with respect to the bus with respect to the road A crow sitting on a cow grazing in a field with respect to the cow with respect to the ground A child standing in a field with respect to the ground with respect to the sun A book on a rotating table​

Answer 1

ANSWERS:

• When the bus is running, the whole body of the passenger is in the state of motion. When the bus stops suddenly, the lower part of the passengers body which is in contact with the bus, comes to rest. But the passengers upper portion remains in the state of motion due to the inertia of motion.

• Crow is in the state of with respect to cow because the relative motion is defined by the two non-contact body they both are in contact with each other here the crow can be in the state of motion with respect to the cow

• The child is in the state of rest as he is positioning in a 90° angle so no work is done by him

• A book on a rotating table also don't do any work as it is in a direction perpendicular to the table. The table does work by rotating while the book do not