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joja [24]
3 years ago
12

A 12 kg ball moving at 20 m/s strikes another ball at rest. After a completely inelastic collision, the balls move at 10 m/s. Wh

at was the mass of the second ball?
Physics
1 answer:
Alborosie3 years ago
6 0
(12)(20)+(x)(0)=(12+x)(10)
240=120+10x
120=10x
x=12 kg
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A player holds two baseballs a height h above the ground. He throws one ball vertically upward at speed v0 and the other vertica
Degger [83]

Answer:

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For this exercise we will use the mathematical expressions, where the directional towards at is considered positive.

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in this case the height y is zero and the height i = h

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ball 2 thrown down, in this case vo is negative

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The times to get to the ground

ball 1

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ball 2

         v =  -v₀ - g t₂

         t₂ = -  \frac{v_{o}  + v }{ g}  

From the previous part, we saw that the speeds of the two balls are the same when reaching the ground, so the time difference is

       Δt = t₂ -t₁

       Δt = \frac{1}{g} \ [(v_{o} - v)  - ( - v_{o}  - v) ]

       Δt = 2 v₀ / g

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