Two blocks of masses m, = 4.00 kg and m, = 8.00 kg are each released from rest at a height of 5.00 m on a frictionless track, as shown in the figure, and undergo an elastic head-on collision. Find the maximum height to which block m, rises after the collision. т т2 5.00 m 5.00 m

A 38.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 22.0 m/s. If the player was moving upward with a speed of 2.70 m/s just before impact.  (d) What will be the speed of the ball immediately after the collision if the ball rebounds vertically upwards and the collision is elastic? (Note that the force of gravity may be ignored during the brief collision time.) A 38.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 22.0 m/s. If the player was moving upward with a speed of 2.70 m/s just before impact.  (e)  If the ball is in contact with the players head for 49 ms, what is the average acceleration of the ball? (Note that the force of gravity may be ignored during the brief collision time.) A 38.0 kg soccer player jumps vertically upwards and heads the 0.45 kg ball as it is descending vertically with a speed of 22.0 m/s. If the player was moving upward…

A block of mass m = 8 40 kg, moving on a horizontal frictionless surface with a speed 4.20 m/s, makes a perfectly elastic collision with a block of mass Mat rest After the collislon, the 8 40 block recoils with a speed of 0.400 m/s In the figure, the blocks are in contact for 0 200 s. The magnitude of the average force on the 8.40-kg block, while the two blocks are in contact, is closest to

A 19.0 kg curling stone is travelling at 3.0 m/s [N] along the smooth ice when it hits an opponent’s stone that is at rest.  (Both stones have the same mass.)  The opponent’s stone rolls off at a velocity of 1.8 m/s [N 22° W]. Determine the percentage of kinetic energy lost during the collision and comment on how close this collision is to being elastic.