Fill in the following blanks with suitable words:
(a) …... is a measure of the inertia of a body.
(b) When a running car stops suddenly, the passengers are jerked .....
(c) When a stationary car starts suddenly, the passengers are jerked....
(d) Newton's first law of motion is also called Galileo's law of....
(e) If there were no unbalanced force of.... and no........ resistance, a moving bicycle would go on moving for ever.

Answer

(a) Mass (b) forward (c) backward (d) inertia (e) friction ; air