Two blocks collide on a frictionless surface. After the collision, the blocks sticktogether. Block A has a mass M and is initial
ly moving to the right at speed v. Block B has amass 2M and is initially at rest. System C is composed of both blocks. (a) Draw a free-bodydiagram for each block at an instant during the collision. (b) Rank the magnitudes of thehorizontal forces in your diagram. Explain your reasoning. (c) Calculate the change inmomentum of block A, block B, and system C.Anybody want to take a crack at this?
1 answer:
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Answer:
93.75 m/s
Explanation:
Given:
The frequency of the sound = 750 Hz
The number of pistons making the sound = 8
Revolutions made by the engine = 2000 revolutions/ km
Thus,
the frequency of sound by 1 piston = 750 / 8 = 93.75 Hz
also, it is given that for every other revolution sound is made.
thus, for every 2 revolution sound is made
therefore,
Number of revolutions per second = 93.75 Hz × 2 = 187.5 rev/s
Now,
the speed of the car will be calculated as:
= Number of revolutions per second / Revolutions made by the engine
or
The speed of the car =
or
The speed of the car = 0.09375 km/s = 93.75 m/s