Q. A cyclist starts from the centre 0 of a circular ground of radius 1 km, reaches the edge A of the ground and then travels along the circumference upto B and then reaches the centre along BO as shown in figure. If he takes 10 minutes to complete this journey, find (i) the net displacement,
(ii) average velocity and
(iii) averagof the cyclist.

A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?

Determine the maximum r-value of the polar equation r =3+3 cos 0

Two loudspeakers, 5.5 m apart and facing each other, play identical sounds of the same frequency. you stand halfway between them, where there is a maximum of sound intensity. moving from this point toward one of the speakers, you encounter a minimum of sound intensity when you have moved 0.33 m . assume the speed of sound is 340 m/s.part a) what is the frequency of the sound? part b) if the frequency is then increased while you remain 0.21 m from the center, what is the first frequency for which that location will be a maximum of sound intensity? express your answer to two significant figures and include the appropriate units.