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Anuta_ua [19.1K]
2 years ago
10

A 7 kg ball of clay traveling at 12 m/s collides with a 25 kg ball of clay traveling in the

Physics
1 answer:
ANEK [815]2 years ago
4 0

Answer:

<em><u>Given: </u></em>

m1 = 7 kg

V1 = 12 m/s

m2 = 25 kg

V2 = 6 m/s

<em><u>To find:</u></em>

Combined speed of two balls stick together after collision V = ?

<em><u>Solution:</u></em>

<em>According to law of conservation of momentum,</em>

m1V1 + m2V2 = (m1+m2)V

7×12 + 25×6 = (7+25)V

84 + 150 = 32V

V = 234/32

V = 7.31 m/s

Combined speed of two ball is 7.31 m/s

<em><u>Thanks for joining brainly community!</u></em>

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Read 2 more answers
You throw a bouncy rubber ball and a wet lump of clay, both of mass m, at a wall. Both strike the wall at speed v, but while the
lana [24]

Answer:

<em>The fifth option is the correct answer: mv; 2 mv</em>

Explanation:

<u>Change of Momentum</u>

Assume an object has a momentum p1 and after some interaction it now has a momentum p2, the change of momentum is

\Delta p=p_2-p_1

The momentum is computed as

p=mv

Where m is the mass of the object and v its speed. Now let's analyze the situation of both the ball and the clay.

The clay has an initial speed v and a mass m, thus its initial momentum is

p_1=mv

When it hits the wall, it sticks, thus its final speed is 0 and

p_2=0

The change of momentum is

\Delta p=0-mv=-mv

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Now for the ball, the initial condition is the same as it was for the clay, but the ball hits back at the same speed, thus its final momentum is

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The change of momentum is

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The absolute change is 2mv

The fifth option is the correct answer: mv; 2 mv

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4 years ago
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