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Answers
Answer:
Q.3:
For the passengers in a moving bus, the roadside trees will be appear to moving backwards. A person standing on the roadside perceives the bus along with the passengers.
Q.4:
Distance is a scalar quantity that refers to how much ground an object has covered during its motion.
Displacement is a vector quantity that refers to the shortest distance an object has traveled.
Q.5:
A body is said to be in uniform motion when it travels equal difference at equal intervals of time. Example: Eath revolving along the sun.
An object is said to be in non uniform motion when it travels unequal distance in equal intervals of time. Example: A car moving in traffic.
Q.6:
Speed is defined as the distance traveled by a body per unit time. Speed standard unit is m/s and its formula is distance by time.
Q.7:
Average speed is the total speed with which an object is moving.
Q.8:
Velocity is defined as the rate of change of distance of the body with respect to time. Its SI unit is Km/s.
Q.9:
Average velocity is defined as the ratio of total displacement done by the body to the time taken by the body.
Explanation:
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