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3 years ago

11

A basketball has a mass of 1 kg and is traveling 15 m/s. How fast would a 5 kg bowling ball have to travel to have the same mome

ntum?
A) 3 m/s

B) 15 m/s

C) 1 m/s

D) 5 m/s

2 answers:

DiKsa [7]3 years ago

8 0

A) 3 m/s. Hope this helps.

Andrei [34K]3 years ago

5 0

Answer:

A 3m/s

Explanation:

Took the test (k12)

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From January 26, 1977, to September 18, 1983, George Meegan of Great Britain walked from Ushuaia, at the southern tip of South A

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Explanation:

We can see it in the pic.

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Calculate the work done on a Pressure / Volume (PV) isothermal expansion where 400 Pa and 0.08 volume in m3?

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PV = 400 x 0.08 = 32 J

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3 years ago

A sound wave has a speed of 330m/s and a wavelength of 0.372 m. what is the frequency of the wave?

Alja [10]

Answer:

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Explanation:

Given parameters:

Speed of sound wave = 330m/s

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Unknown:

Frequency = ?

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3 years ago

an elevator mass of 7700 kg falls from a height of 32 m after a sudden failure in the hoisting cable. The mass is stopped by a s

valkas [14]

Answer:k=28.29 kN/m

Explanation:

Given

mass $m =7700 kg$

height from which Elevator falls $h=32 m$

Let x be the compression in the spring

thus From conservation of Energy Potential energy will convert in to Elastic Potential Energy of spring

$\frac{kx^2}{2}=mg(h+x)$ ----------1

also maximum acceleration is 5g

thus

$mg-kx=ma$

here $a=-5g$

$kx=mg-m(-5g)=6mg$

$x=\frac{6mg}{k}$

Substitute x in equation 1

$0.5\times k\times (\frac{6mg}{k})^2=mg(h+\frac{6mg}{k})$

$18\frac{(mg)^2}{k}=mgh+6\frac{(mg)^2}{k}$

$k=12\cdot \frac{mg}{h}$

$k=12\times \frac{7700\times 9.8}{32}$

$k=28.29 kN/m$

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3 years ago

A pure substance that is made of only one kind of atom is called _________.

Nina [5.8K]

A pure substance that is made up of only one kind of atom is called an element

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4 years ago

Read 2 more answers