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3 years ago

Which ball (if either) has the greatest speed at the moment of impact

Physics

2 answers:

Ierofanga [76]3 years ago

5 0

Are there any options??

I would have to say metal of course but without options I can't assume anything

Alenkinab [10]3 years ago

4 0

Whichever ball is placed higher, but if the balls are at the same level then both experience the same acceleration thus same speed.

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3 years ago

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Answer:

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2 years ago

8. John has to hit a bottle with a ball to win a prize. He throws a 0.4 kg ball with a velocity of 18 m/s. It hits a 0.2 kg bott

nasty-shy [4]

Answer: The ball is travelling with a speed of 5.5 m/s after hitting the bottle.

Explanation:

To calculate the speed of ball after the collision, we use the equation of law of conservation of momentum, which is given by:

$m_1u_1+m_2u_2=m_1v_1+m_2v_2$

where,

$m_1,u_1\text{ and }v_1$ are the mass, initial velocity and final velocity of ball.

$m_2,u_2\text{ and }v_2$ are the mass, initial velocity and final velocity of bottle.

We are given:

$m_1=0.4kg\\u_1=18m/s\\v_1=?m/s\\m_2=0.2kg\\u_2=0m/s\\v_2=25m/s$

Putting values in above equation, we get:

$(0.4\times 18)+(0.2\times 0)=(0.4\times v_1)+(0.2\times 25)\\\\v_1=5.5m/s$

Hence, the ball is travelling with a speed of 5.5 m/s after hitting the bottle.

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3 years ago

To cite a source is to ______.

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Answer:

Explanation:

Mark as brailiest >_<

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3 years ago