Two toy trains with velcro collide on a train track in a completely inelastic collision. The blue train (A) has a mass of 5.7g travelling at a speed of 4.5 m/s [29 degrees E of N]. The red train (B) has a mass of 9.3g and is stationary. What is their final speed after the collision?

answer is vf= 1.0 m/s.

Freight car A with a gross weight of 152000 Ib is moving along the horizontal track in a switching yard at 2.0 mi/hr. Freight car B with a gross weight of 162000 Ib and moving at 2.6 mi/hr overtakes car A and is coupled to it. Determine (a) the common velocity V of the two cars as they move together after being coupled and (b) the loss of energy |AE| due to the impact. 2.6 mi/hr 2.0 mi/hr A. Answers: (a) V = mi/hr ( b) |ΔΕΙ- i ft-lb

For Christmas you receive a new toy train engine of mass m1 = 1.0 kg. Playing around, youset your new toy going at 2.0 m/s, but you inadvertently cause a crash with another train of massm2 = 1.0 kg initially at rest. The crash converts 800 mJ of kinetic energy into sound and thermalenergy. What are the resulting velocities of the two trains after the collision?

As a car was passing through an intersection at 8.01 m/s [0.0°] it was hit broadside by a 1600 kg pickup truck running a red light at 8.38 m/s [90.0°]. Immediately after the 0.185 s collision, the velocity of the car was 5.68 m/s [62.4°], and the velocity of the truck was 6.12 m/s [48.78°].Based on the information in the above narrative, the mass of the car was   a 1.20 ´ 103 kg. b 1.05 ´ 103 kg. c 9.50 ´ 103 kg. d 1.28 ´ 103 kg. please show all work, thank you

A 130 lb person sitting in a 150 lb iceboat fires a gun, discharging a 2 oz bullet horizontally. If the bullet speed leaving the gun is 1200 ft/s, what will be the speed of the boat after the bullet is fired, if we assume no friction? The correct answer is 0.54 ft/s

A neutron particle (mass= 1.0 u) is emitted from an atomic nucleus in the direction of its velocity. Initial speed of nucleus is 395 m/s and slowed down to 310 m/s. Atomic nucleus has a mass of 180 u. Find the speed of the neutron particle when emitted* a) 0.86X 10^5 m/s b) 1.5 x10 ^4 m/s c) 2.1 x10^4 m./s d) 2.7 x110 ^6 m/s e) nota

Consider the head-on collision of two identical bowling balls, each with mass 5 kg (see figure). Ball A with velocity v = m/s strikes ball B, which was at rest. Then ball A stops and ball B moves with the same velocity v that ball A had initially. M M В Initially at rest Initial state (before collision) Final state (after collision) M M B Now at rest (a) Choose a system consisting only of ball A. What is the momentum change of the system during the collision? Apsystem = kg • m/s What is the momentum change of the surroundings? Apsurroundings = kg • m/s (b) Choose a system consisting only of ball B. What is the momentum change of the system during the collision? Apsystem = kg · m/s What is the momentum change of the surroundings? Apsurroundings = kg · m/s (c) Choose a system consisting of both balls. What is the momentum change of the system during the collision? APsystem = kg · m/s What is the momentum change of the surroundings? Apsurroundings = kg • m/s

Two particles A and B are moving towards each other along the x-direction with speeds VA = 2 m/s and vB = 2 m/s, as shown in the figure below. The masses are respectively mA =1 kg and mB = 1.2 kg. The coefficient of restitution e = 0.5. A V₁ VAX = -2.36 m/s VAX=- 1.27 m/s VAX=-0.18 m/s VAX = 2 m/s VB B X Calculate the x-component of the velocity vector of particle A after impact (magnitude and sign); give your answer in the coordinate system shown in m/s.

Two balls are about to collide. Ball 1 has a mass of 10kg, and is moving [down] at an unknown speed. Ball 2 is 11kg and is moving [up] at a speed of 6m/s. After they collide, ball 1 moves with a velocity of 8m/s [60° Up of right]. Ball 2 moves with an unknown velocity [55° down of left]. An image has been added to help picture the situation. What is the initial velocity of ball 1? 260° 59 5.1m/s [down] 5.38m/s [down] O 6.34m/s [down] O 6.9m/s [down]