5.) Why is velocity considered as vector quantity?
6.) What is uniform velocity?
7.) What is a variable velocity or non-uniform velocity?
8.) What is acceleration?
9.) What is retardation?
10.) Differentiate between:
(a) distance and displacement
(b) average velocity and relative velocity
(c) acceleration and retardation
11.) Answer the following questions:
(a) Define the reference point.
(b) What is acceleration?
(c) What do you understand by retardation?
(d) What is meant by relative velocity?
(e) Write down the formula to calculate the relative velocity of a body moving in
12.) Solve these numerical problems.
(a) If a bus covers 4.2 km of distance in 7 minutes, then calculate its average velocity. (Ans: 10 m/ s)
(b) If a car starts to inove from rest and its velocity becomes 30 mis in 12 seconds then find its acceleration. (Ans:
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