Two boys having the same mass are standing on ice-skates at some distance apart on a frictionless surface. A rope is fastened around the body of a boy, other end of which is in the hand of the second boy. What would happen if the second boy pulls the rope?

Two skaters have weight in the ratio 4:5 and are 9m apart, on a smooth frictionless surface. They pull on a rope stretched between them. The ratio of the distance covered by them when they meet each other will be

Two skaters A & B of mass M and 2M are standing together on a frictionless ice surface. They push each other apart. The skater B moves away from A with a speed of 2 m/s relative to ice. The separation between the two skaters after 5 seconds will be

A man of mass m stands at the left end of a uniform plank of length L and mass M, which lies on a frictionaless surface of ice. If the man walks to the other end of the plank, then by what distance does the plank slide on the ice?

A rope of length 4 m having mass 1.5 kg/m lying on a horizontal frictionless surface is pulled at one end by a force of 12N. What is the tension in the rope at a point 1.6 m from the other end?

A 35-kg girl is standing near and to the left of a 43-kg boy on the frictionless surface of a frozen pond. The boy throws a 0.75-kg ice ball to the girl with a horizontal speed of 6.2 m/s. What are the velocities of the boy and the girl immediately after the girl catches the ice ball?

Two boys stand close to a long straight metal pipe and at some distance from each other. One boy fires a gun and the other hears two explosions , with a time interval of one second between them. If the velocity of sound in metal is 3630 m s^(-1) and in air is 330 m s^(-1) , the distance between the two boys is

A boy is standing on the ground and flying a kite with 100m of string at an elevation of 30o . Another boy is standing on the roof of a 10 m high building and is flying his kite at an elevation of 45o . Both the boys are on opposite sides of both the kites. Find the length of the string that the second boy must have so that the two kites meet.

10 friends (5 boys P, Q, R, S and T and 5 girls A, E, I, O and U) are playing a game and they are sitting in a circle. The distance between every two friends is equal. Two boys and two girls are facing opposite to the centre of the circle and other 6 friends are facing towards the centre of the circle. A is the fourth to the left of O, who is third to the right of P. R is second to the right of T, who is not near to E. There are three friends between I and R. S is second to the left of U and facing the centre of the circle. P and E are sitting opposite and facing each other. I is second to the left of Q. A is facing opposite to the centre of the circle. More than three boys or girls are not sitting together. Not more than two friends who are facing opposite to the centre of the circle are sitting together. Which two boys are facing opposite to the centre of the circle ?

Two ice-skaters of mass 120 kg and 200 kg are initially hugging on a frictionless ice surface. Ten seconds after they push off from each other, they are 8.0 cm apart. The distance moved by the skater of mass 200 kg is