Two locomotives, each weighing 100,000 kg and having a speed of 100 km/hr. race toward each other and have a completely inelastic collision. What is the final momentum of the system? Justify your answer.

A careless driver driving at 25 m/s hit a tree while fumbling with his phone. Assume the driver was in contact with the air bag for 0.22 seconds, and his upper body has 37 kg in mass, then how much average force (absolute value) does the air bag exert on the driver's upper body? Ignore gravity since the force was horizontal. Hint: use impulse and the change of momentum.

One object is at rest, and another is moving. The two collide in a one-dimensional, completely inelastic collision. In other words, they stick together after the collision and move off with a common velocity. Momentum is conserved. The speed of the object that is moving initially is 22 m/s. The masses of the two objects are 3.1 and 7.1 kg. Determine the final speed of the two-object system after the collision for the case (a) when the large-mass object is the one moving initially and the case (b) when the small-mass object is the one moving initially. (a) Vf = i (b) vf= i

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The ballistic pendulum (see the figure below) is a device used to measure the speed of a fast-moving projectile such as a bullet. The bullet is fired into a large block of wood suspended from some light wires. The bullet is stopped by the block, and the entire system swings up to a height h. m, + mg (a) Determine the ratio of the momentum immediately after the collislon to the momentum Immediately before the collision. Pi (b) Show that the ratio of the kinetic energy immediately after the collision to the kinetic energy immediately before the collision is m,/(m, + m,). (Submit a file with a maximum size of 1 MB.) OCharbs D. Winters/Ce

(a) If the impulse experienced during the collision is 200 Ns, use the information in the plot to calculate the peak force experienced during the collision.  (b) Calculate the average force experienced during the collision.

A 0.143 kg baseball, thrown with a speed of 44.6 m/s, is hit straight back at the pitcher with a speed of 53.0 m/s. (a) What is the magnitude of the impulse delivered by the bat to the baseball? Momentum is a vector. When the baseball changes direction, the direction of the momentum changes, too. Make sure you take this into account when you find the change in momentum. In other words, one of the momenta should be negative, and the other should be positive. kg · m/s (b) Find the magnitude of the average force exerted by the bat on the ball if the two are in contact for 1.92 x 10-3 s. S. kN

A cruise ship with a mass of 1.43 ✕ 107 kg strikes a pier at a speed of 0.672 m/s. It comes to rest 5.94 m later, damaging the ship, the pier, and the tugboat captain's finances. Calculate the average force (in N) exerted on the pier using the concept of impulse. (Hint: First calculate the time it took to bring the ship to rest. Assume the ship moves in the positive direction. Indicate the direction with the sign of your answer.)

A grenade is initially at rest. Suddenly, it explodes into many different pieces. If you were to sum up the momentum of all the pieces (and gases), what would the result be?

TWO-PART QUESTION  PART ONE: A 12000 kg tank moving at 8 m/s is broughtto a halt in 1.5 s by a reinforced-steel tankbarrier.What magnitude of the impulse was imparted to the tank?Answer in units of kgm/s.   PART TWO: What is the average net force exerted bythe tank on the barrier?Answer in units of N.