Wiley Coyote and his Acme rocket, together having inertia of 1000kg, are speedin

Question

Wiley Coyote and his Acme rocket, together having inertia of 1000kg, are speeding after roadrunner. Upon seeing a large brick wall, he tries to slow down. Unfortunately, he's still going 5m/s when he runs into the wall. The wall is not affected, but the rocket crumples (the coyote hangs on), such that the center of mass of the rocket/coyote travels 50 cm between striking the wall and coming to rest. (only consider horizontal motion)

-What is the change of the center of mass of the rocket/coyote combination?

-What is the total work done by the wall on the rocket/coyote system?

-What is the magnitude of the average force on the rocket/coyote system?

Above, we neglected the force of gravity on the rocket. How would that change the energy

of the rocket, assuming that once it starts crashing, it loses its ability to hover? We are looking for a

qualitative answer, with signs and good physics, but you don

Explanation / Answer

a) dx = 0.5 m

b) W = dKE = 1/2 mv^2 = 0.5*1000*5^2=12500 J

c) W = F d

F = 12500/0.5=25000 N

d) it would gain some kinetric energy since it would fall some and thus the wall would do more work

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