Question

A object complete one round of a square park of side 10 m in 30 sec. Find distance and displacement after 45 sec

Answer 1

Let ABCD be the side of square

time to complete 1 round =30 sec

time = 45 seconds

number of rounds = 45/30 = 1.5

distance covered in 1 round = 30 m

distance covered in 1.5 rounds = 1.5 ×30= 45 m

displacement AC =√10×10+10×10

= √200

=√2×10×10

=10√2

Hope it helps you