Section B A rooket pushes out 2.5 kg of exhaust gas every second at a velocity of 120 m/s. (a) Calculate the gain in momentum by the gas in one second's time. gain in momentum by the gas .... (b) Hence determine the force produced by the engine. force produced = A bullet is fired from the barrel of a 750 g pistol. The explosion within the chamber of the pistol pushes the 5 g bullet out with an exit velocity of 210 m/s. V =? m/s V = 210 m/s Calculate (a) the momentum of the bullet as it leaves the barrel of the pistol, momentum of the bullet = .... (b) the initial speed of the recoil of the pistol.

A 5.9 × 107 kg battle ship originally at rest fires a 1100-kg artillery shell horizontally with a velocity of 585 m/s. The firing of the shell results in a recoil velocity of -0.01091 m/s. Calculate the change of kinetic energy, in joules, for the ship and the shell. This energy is less than the energy released by the gun powder; in other words, there is significant heat transfer.

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Which statement is incorrect about gases, liquids, and solids? O Gases and liquids flow so they are both fluids. O Liquids and solids are hard to compress. O All these statements are incorrect. O Solids and gases take the shape of containers they arc in.

A 20 g glob of clay traveling east at 3.0 m/s collides with 30 g glob of clay traveling north at 2.0 m/s.  Determine the speed of travel of the resulting 50 g glob of clay.

A ball of mass 0.470 kgkg moving east (+x+xdirection) with a speed of 3.84 m/sm/s collides head-on with a 0.235 kgkg ball at rest. Assume that the collision is perfectly elastic. 1.What is be the speed of the 0.470-kgkg ball after the collision? Express your answer to three significant figures and include the appropriate units. 2. What is be the direction of the velocity of the 0.470-kgkg ball after the collision? East or west? 3.What is the speed of the 0.235-kgkg ball after the collision? Express your answer to three significant figures and include the appropriate units. 4.What is the direction of the velocity of 0.235-kgkg ball after the collision? East or west?

A 120 g ball moving to the right at 4.2 m/s catches up and collides with a 450 g ball that is moving to the right at 1.2 m/s. Part A If the collision is perfectly elastic, what is the speed of the 120 g ball after the collision? Express your answer to two significant figures and include the appropriate units. ► View Available Hint(s) V1 = Submit Part C μA Value Units ? If the collision is perfectly elastic, what is the speed of the 450 g ball after the collision? Express your answer to two significant figures and include the appropriate units. Review | Constants

A 110-kilogram tackler traveling at 2.5 m/s makes a head-on collision with and successfully carries an 88-kilogram halfback traveling at 5.0 m/s. Part A How fast will they be going together just after they smash into each other? Include the correct units and round your result to two major numbers. Submit 31 Value = v' Units Requested: O