Two small spheres of equal mass, and heading towards each other with equal speeds, undergo a head on collision `(` external force acts on system of two spheres `)`. Then which of the following statement is correct ?

A metal sphere is hung by a string fixed to a wall. The forces acting on the sphere are shown in fig Which of the following statements are correct?

A metal sphere is hung by a string fixed to a wall. The forces acting on the sphere are shown in fig Which of the following statements are correct?

A metal sphere is a string fixed to a wall. The forces acting on the sphere are shown in figure. Which of following statements are correct.

A metal sphere is a string fixed to a wall. The forces acting on the sphere are shown in figure. Which of following statements are correct.

Two trains, each having a speed of 30 km//h , are headed towards each other

Statement I: If a sphere of mass m moving with speed u undergoes a perfectly elastic head-on collision with another sphere of heavier mass M at rest ( M gt m ), then direction of velocity of sphere of mass m is reversed due to collision (no external force acts on system of two spheres). Statement II: During a collision of spheres of unequal masses, the heavier mass exerts more force on the lighter mass in comparison to the force which lighter mass exerts on the heavier one,

Statement I: If a sphere of mass m moving with speed u undergoes a perfectly elastic head-on collision with another sphere of heavier mass M at rest ( M gt m ), then direction of velocity of sphere of mass m is reversed due to collision (no external force acts on system of two spheres). Statement II: During a collision of spheres of unequal masses, the heavier mass exerts more force on the lighter mass in comparison to the force which lighter mass exerts on the heavier one,

Statement I: If a sphere of mass m moving with speed u undergoes a perfectly elastic head-on collision with another sphere of heavier mass M at rest ( M gt m ), then direction of velocity of sphere of mass m is reversed due to collision (no external force acts on system of two spheres). Statement II: During a collision of spheres of unequal masses, the heavier mass exerts more force on the lighter mass in comparison to the force which lighter mass exerts on the heavier one,