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yuradex [85]
3 years ago
11

While sitting motionless in a 5 kg friction free wagon, an 80kg clown catches a 15 kg cannonball traveling horizontally at 20 m/

s. After the cannonball is caught, at what speed do the clown, wagon, and ball move?
Physics
1 answer:
posledela3 years ago
4 0
Momentum is conserved
15*20= initial momentum =300
total mass after being caught = 100 
momentum=mass*velocity
thus dividing the momentum by total mass we get the velocity of 3 m/s
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Answer:

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Explanation:

(a) v = ωR

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v = 0.60×8.05×2π = 30.34 m/s

Now in 2nd case

when R = 0.90, ω = 6.53×2π

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6.35 rev/s gives greater speed for the ball.

(b) a = ω^2 R = (8.05×2π)^2 )(0.60) = 1534.98 m/s^2

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3 years ago
4) Write down the transformation of energy in torch light.<br>​
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Answer:

<u>The transformation of energy in a torch light is as follows:</u>

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<h2>~AnonymousHelper1807</h2>
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castortr0y [4]

Answer: D.) 39,200 J

Via the equation of potential energy PE = mgh where m is mass, g is the average gravity on earth and h is the height.  In this case m = 400 kg, g = 9.8, h = 10 m thus:

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Answer:

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microscopic refers to substances visible to the naked eye

macroscopic are substances invisible to naked eye

Similarities

both refer to different scales that are useful to determining the size to different compounds.

Explanation:

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