Two balls roll directly towards one another. The 0.25 kg ball has a speed of 1.7 m/s. The 0.18 kg ball has a speed of 2.5 m/s. After the collision the 0.25 kg ball has reversed direction and has a speed of 0.10 m/s. What is the velocity of the 0.18 kg mass after the collision?

John is in a  lab performing an experiment on collision. John takes a 3.0 kg car and sets it moving right with a speed of 1.0 m/s. This car collides with a second car of mass 6.0 kg that John has given a speed of 3.0 m/s left. After the collision, John notes the 3.0 kg car is moving 1.0 m/s left. From this, what would John observe as the velocity of the 6.0 kg car?     A. 2.0 m/s to the right   B. 0.80 m/s to the left   C. 0.80 m/s to the right   D. zero m/s   E. 2.0 m/s to the left

A 5-kg object moving with a velocity of 8 m/s in the positive x direction strikes and sticks to a 3-kg object moving with a speed of 3 m/s in the opposite direction. What is their speed after the collision?

A 7.6 kg block with a speed of 3.9 m/s collides with a 15.2 kg block that has a speed of 2.6 m/s in the same direction. After the collision, the 15.2 kg block is observed to be traveling in the original direction with a speed of 3.3 m/s. (a) What is the velocity of the 7.6 kg block immediately after the collision? (b) By how much does the total kinetic energy of the system of two blocks change because of the collision? (c) Suppose, instead, that the 15.2 kg block ends up with a speed of 5.2 m/s. What then is the change in the total kinetic energy?