Question

Solve Part 2

Fall 2019 - Physics 130 Worksheet (Topics: Mostly Momentum, Impulse, Energy, and Power) I certainly hope that you all have a wonderful Halloween! Cecil, Gretta, and Buster love Halloween. It's their one opportunity to run around in costumes and perform tricks while leaving "treats" all around the neighborhood. Besides, children often leave trails of candy on Halloween. This year, Buster will dress up as his favorite fictional character Sherlock Holmes, Gretta will wear her princess costume (which she wears even when it isn't Halloween), and Cecil is dressed up as a bird, no as a plane, no she's Super Dog Next year Buster wants to go as his favorite mythical creature, the bustercorn: half unicorn, half Buster (Cecil told him it's a pretty simple costume... a paper towel tube and some crazy glue). 1. Cecil wants to be able to leap tall doghouses in a single bound while wearing her Super Dog costume. Cecil can almost jump up to the roof of her doghouse now. Cecil thinks that she might be able to retrofit her Rapid Buster Delivery System® (which she uses to deposit Buster over the fence when he annoys her) to help her. The basics of her prototype is shown below. A block of mass, m:= 5.00-kg, is released from a height 5.00-m above the bottom of the track. It carries a very strong magnet and is arranged so as to repel an identical magnet embedded in block m2 = 10.0 kg, initially at rest. The two blocks never touch and friction can be ignored. (a) Calculate the maximum height to which mis returned after the collision (b) What is the flaw in Cecil's design? 5.00 m - - - - - - - 2. Next, Cecil and Gretta explore whether inelastic collisions could achieve a puppy escape velocity. They have a 12.0-9 wad of used chewing gum that they found on a walk and they shoot it at Mark's 100-g candy bar sitting on the table. After impact, the candy bar (covered in gum) slides 7.5-m really long table) before coming to rest. The coefficient of friction between the candy bar and the table is 0.650. What was the speed of the gum immediately before impact? 3. Cecil and Gretta agree that preliminary testing is complete and they are ready for launch! They want to strap Euster to a Saturn V launch vehicle. It consumes fuel and oxidizer at a rate of 1.5 x 10^-kg/s with exhaust speed of 2.6x10-m/s. (a) what thrust would be produced? (b) What acceleration is achieved if the initial total mass of Buster plus thruster is 3.00 x 100-kg? ***Please join us next time, when Buster/Sherlock Holmes tries to solve the case of the missing dog treat.***

Answer 1

The detailed solution for this problem is given below

v₁ is the speed of gum immediately before impact.

- 0.012 Kg 12x10-3K 2) m,= mass t qum 0oxio-3o. nass ot candy 7.5 m u 0.65O V O my דהד TTTTTIT77 Just before collision Final Jutatter collision Friction foxce will act oppasite to the dineition of motton So = ma tmem(m,+ m2)a (-ve x-axis a Nous, atter cellision , swe can ued equation, V2-V2=2as 02-V2 (-g)s =2x0-65x9.gx 7.5 V2 9.78 m/s V 2 momentum, we get. conservation m,+m2v (m tms) v M,IVi 0.012+0.1)x4.78 O-01 2 M, v91.28 m/s

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