Which of the following statements is correct?
A Motion of soldiers on march past is a periodic motion.
B Motion of a train along a curved track on hills is the example of curvilinear motion.
C Every periodic motion is also a oscillatory motion.
D Hockey player running after a ball is a combined motion.
Motion of soldiers is periodic motion, not translatory motion.
Ans 4:
Class : Class 6
Ans A also is correct as the motion of the soldiers is uniform that is it is periodic. The motion of the hands is also oscillatory which is periodic
Ans 5:
Class : Class 7
D is also correct the player experiences random motion and because he is running after a ball which is in random motion so he is in random motion too. he also experiences oscillatory motion because while he is running his legs ags are going up and down to the extreme points which are the properties of oscillatory motion.