A 100-g firecracker is launched vertically into the air and explodes into two pieces at the peak of its trajectory. If a 72-g piece is projected horizontally to the left at 17 m/s what is the speed of the other piece? (absolute value) How much energy is released by the explosion, assuming it all goes to the fragments.
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- A proton of mass m undergoes a head on collision with a stationary atom of mass 13m. If the initial speed of the proton is 350 m/s, find the speed of the proton after the collision.In a very busy off-campus eatery one chef sends a 221 g broccoli-tomato-pickle-onion-mushroom pizza sliding down the counter from left to right at 1.59 m/s. Almost simultaneously, the other chef launches a 315 g veggieburger (with everything, but hold the horseradish) along the same counter from right to left at 2.27 m/s. The two delicacies collide head on at the given speeds. The counter is practically friction free due to accumulated grease. The two delicacies merge into a single, unbelievably savory serving. In what direction does the merged meal move, if it moves at all? a. to the right b. to the left c. does not move At what speed does it move in m/s? (positive number).3. Two asteroids collide and stick together. The first asteroid has mass of 15 × 10³ kg and is initially moving at 770 m/s. The second asteroid has mass of 20 × 10³ kg and is moving at 1020 m/s. Their initial velocities made an angle of 20° with respect to each other. What is the final speed and direction with respect to the velocity of the first asteroid? How much thermal energy is generated in the collision?
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