John’s 200-kg bumper car is traveling east at 10 m/s when it collides head-on with Bob’s 180-kg bumper car traveling west. After the collision, John’s car travels west at 20 m/s while Bob’s travels east at 15 m/s. Determine Bob’s initial velocity.

Problem 3: Doctor Doom, who has a mass of 188kg, is charging towards the Hulk who has a mass of 636kg and is running at him with a velocity of -33.0m/s. The two of the undergo an elastic collision and Doctor Doom ends up flying away from the Hulk with a final velocity of -61.0m/s. a) What is the initial velocity of Doctor Doom and the final velocity of the Hulk? b) What is the initial kinetic energy of Doctor Doom and the Hulk before they collide?

A 1000-kg car approaches an intersection traveling north at 20.0 m/s. A 1200-kg car approaches the same intersection traveling east at 22.0 m/s. The two cars collide at the intersection and lock together. Ignoring any external forces that act on the cars during the collision, what is the velocity of the cars immediately after the collision? 15.1 m/s in a direction 52.8° east of north O 21.1 m/s in a direction 47.7° west of south O 21.1 m/s in a direction 47.7° east of north O 29.7 m/s in a direction 47.7° east of north O 21.1 m/s in a direction 52.8° east of north

Two 3011 kg train cars toward each other (Car A at 0.8 m/s, Car B at -2.13 m/s) on a level track. After they collide and couple together, what is the final velocity of the two-car object? Your answer should be in units of m/s but your should only submit the number for your answer (and don't forget to check your signs

A 0.145 kg baseball is pitched at 42 m/s to the right. The batter hits it horizontally to the pitcher at 58 m/s.(Zitzewitz et.al., 2006)A. Find the change in momentum of the ball.B. If the ball and bat are in contact for 4.6x10¯ 4 s, what is the average force duringthe contact?

R 身 Collisions in One Dimension Part A On a frictionless horizontal air table, puck A (with mass 0.249 kg ) is moving toward puck B (with mass 0.372 kg ), which is initially at rest. After the collision, puck A has velocity 0.121 m/s to the left, and puck B has velocity 0.650 m/s to the right. What was the speed vAi of puck A befo the collision? » View Available Hint(s) VA %3D s/w Submit Part B Calculate AK, the change in the total kinetic energy of the system that occurs during the collision. > View Available Hint(s) 1] ? AK = Submit Provide Feedback ics.com/myct/itemView?assignmentProblemlD=16... MacBook Air 08 000 000 F2 DD F7 F4 F5 F6 %24 & 3. F. D. F 1

A 2.10-kg block is moving to the right at 1.20 m/s just before it strikes and sticks to a 1.00-kg block initially at rest. What is the total momentum of the two blocks after the collision? Enter a positive answer if the total momentum is toward right and a negative answer if the total momentum is toward left.

A 1 295.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 8 900.0 kg truck moving in the same direction at 20.000 m/s. The velocity of the car right after the collision is 18.000 m/s to the east. VTS Before After (a) What is the velocity of the truck right after the collision? (Give your answer to five significant figures.) × m/s east 4.0 (b) What is the change in mechanical energy of the car-truck system in the collision? Your response differs from the correct answer by more than 10%. Double check your calculations. J (c) Account for this change in mechanical energy.