Question

Vave = 40m East / 4 s = 10 m/s East
Q1. What is the velocity of the car travel in 30 m East in 3 s? ______________

Q2. Give the average velocity of a car moving 20 m in 2 s. _________________

Answer 1

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Average speed is given by :- v = total distance travelled/total time taken.

Time taken to walk 30m east with velocity 2m/s is :- t = d/s => 15s

Time taken to walk 40m north with velocity 3/2m/s is :-t = d/s = 80/3s

Average speed = 70/(15+80/3) => 42/25 or 1.68m/s

Average velocity is given by :- total Displacement/total time taken.

Displacement = s = v302+40² = 50

Total time = 125/3

Average velocity = 50/125/3 => 6/5 or 1.2m/s

Explanation:

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