1. Cecil wants to be able to leap tall doghouses in a single bound while wearing...

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 m = 10.0 kg initially at rest. The two blocks never touch and friction can be ignored.

Calculate the maximum height to which m is returned after the collision. b) What is the flaw in Cecil’s design?
What is the flaw in Cecil’s design

2. Next, Cecil and Gretta explore whether inelastic collisions could achieve a puppy escape velocity. They have a 12.0 g was of used chewing gum that they found on a walk and they shoot it at Mark’s 100g candy bar sitting on the table. After impact, the candy bar (covered with gums) slides 7.5m (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 Buster to a Saturn V launch vehicle. It consumes fuel and oxidizer at a rate of 1.5 * 10^4 kg/s with exhaust speed of 2.6*10m’s. (a) What thrust would be produced? b) What acceleration is achieved if the initial total mass of Buster plus thruster is 3.00*10^6 kg?

Expert Solution

genius_generous answered 7 months ago

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