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andrew-mc [135]
3 years ago
11

A cue ball with mass 170g hits a stationary number 8 ball, which has mass 160g. The cue ball

Physics
1 answer:
forsale [732]3 years ago
3 0

Answer:

0.49 m/s

Explanation:

The law of conservation of linear momentum states that the sum of momentum in a system before and after collision are same. Momentum is a product of mass and velocity of an object hence in this case

m_cu_c+m_8u_8=m_cv_u+m_8v_8

Where m represent mass, u and v represent the initial and final velocities respectively, subscripts c and 8 represent cue ball and number 8 ball respectively.

Since number 8 ball is initially at rest, its initial velocity is zero. Replacing mass of cue ball with 170 g while mass of number 8 ball with 160g, then taking final velocity of cue ball as 0.2 m/s and final velocity of 8 ball as 0.3 m/s then we get

170u_c+160*0=170*0.2+170*0.3\\u_c\approx 0.49 m/s

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2 years ago
A 1500-kg car accelerates from rest to 25 m/s in 7.0 s. what is the average power delivered by the engine? (1 hp = 746 w)
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The solution for this is:
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The molarity of 10% CaCl2 is 0.9%

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1 year ago
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irinina [24]

Answer:

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Explanation:

From the question,

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I = m×v................... Equation 1

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m = 140/4

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Hence the mass of the dart is 35 kg

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3 years ago
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