2 years ago

A soccer ball with a mass of 0.45 kg is rolling with a momentum of 9 kg*m/s, what is it's velocity?

Physics

1 answer:

Lelu [443]2 years ago

3 0

Answer: 20 m/s

Explanation:

P = mv

since we're trying to find the velocity, you change the formula to v = P/m

v = ?

P = 9 kgm/s

m = 0.45 kg

v = 9 kgm/s / 0.45kg = 20 m/s

You might be interested in

d) To calculate air pressure, the volume occupied by air is assumed constant. Why is this incorrect? Explain how the vapor press

Aleks [24]

Answer:

the volume occupied by air is not constant because as we add ethanol in it it will keep decreasing.

vapor pressure calculated and clausius-Claperon plot are affected because volume and vapor pressure are directly proportional.

Explanation:

by charle's law volume and temperature are directly proportional and vapor pressure is directly proportional to temperature thus volume and vapor pressure are also directly proportional by this relation

3 0

3 years ago

What is the power of a hairdryer that uses a 230V power supply if 5A of current flows through it?

ozzi

Answer: Here ,

V=230

I=5

P=?

so , we know that

P=VI

P=230 ×5

1150 ans

Explanation:

8 0

2 years ago

What’s the purpose of life?

Alborosie

Purpose of life is to explore and get experience. Another reason is to love and let what makes you happy guide you

5 0

4 years ago

When a spring is compressed 2.50 × 10^–2 meter

kompoz [17]

The working of a spring is given by:

$T_{el}= \frac{k\Delta x^2}{2}$

Entering the unknowns, we have:

$T_{el}=\frac{k\Delta x^2}{2} \\ 1.25*10^{-2}*2*J=k(2.5*10^{-2}m)^2 \\ k= \frac{2.5*10^{-2}*J}{(2.5*10^{-2}m)^2} \\ k=40* \frac{J}{m^2} \\ k=40 \frac{N*m}{m^2} \\ \boxed {k=40* \frac{N}{m} }$

If you notice any mistake in my english, please let me know, because i am not native.

4 0

3 years ago

according to the law of consservation of mass, how does the mass of the products in a chemical reaction compare to the mass of t

stellarik [79]

The masses are equal.
According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

I hope that this helps you!

8 0

3 years ago

Read 2 more answers