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3 years ago

14

Why does a bowling ball move without acceleration when it rolls along a bowling alley?

1 answer:

dybincka [34]3 years ago

5 0

The bowling ball is a perfect sphere, therefore, the resistance of the ball with the ground is very small and can be neglected.
This means that there is no horizontal force (F = zero)

Based on Newton's laws:
Force = mass x acceleration
Since the force is zero, therefore, the acceleration must be equal to zero.

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Car A has twice the mass of Car B; both travel at the same speed. Compared to Car B. Car A has:

krek1111 [17]

Answer:

Car A has twice the energy of car B.

Explanation:

The kinetic energy of an object is given by :

$K=\dfrac{1}{2}mv^2$

Where

m is the mass

v is the speed of the object

Car A has twice the mass of Car B. Both travel at the same speed i.e.

$m_A=2m_B$

So,

$\dfrac{K_A}{K_B}=\dfrac{(1/2)m_Av^2}{(1/2)m_Bv^2}\\\\=\dfrac{2m_B}{m_B}\\\\\dfrac{K_A}{K_B}=2\\\\K_A=2\times K_B$

So, the kinetic energy of car A is twice of the kinetic energy of car B.

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ki77a [65]

Answer:

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Sorry if it’s blurry. Please help. I can’t mess up.

geniusboy [140]

answer:

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explanation:

IM SURE THAT IS THE ANSWER

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3 years ago

What is the mass of an object going 25 m/s and has a momentum of 140<br> kg m/s?

slega [8]

Answer:

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Explanation:

p= mv

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The explanation of that is:

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Hope this helped!

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