Question

Starting from A, Raj walks along a rectangular path ABCD
around a community park. He takes 4 minutes to travel each
side. Is motion uniform? Calculate the speed for the entire
round.​

Answer 1

Answer:

No, it is not an uniform motion. The speed of Raj is 1/3 m/s.

Explanation:

Because, each side vary in distance but not in time. So, it was not an uniform motion.

$speed = \frac{total \: distance}{total \: time \: taken}$

total distance = perimeter of park = 2×(l+b) = 2(160) = 320m

time taken = 4 × time taken for each side = 4×4 = 16 min = 16 × 60 = 960 seconds.

$speed = \frac{320}{960} = \frac{1}{3} \frac{m}{s}$