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timofeeve [1]
4 years ago
14

A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2m/s to 4 m/s?

Physics
2 answers:
Vitek1552 [10]4 years ago
6 0
Here, Initial momentum = mu = 6*2 = 12 Kg m/s
Final momentum = mv = 6*4 = 24 Kg m/s

In short, Your Answer would be Option C

Hope this helps!
olganol [36]4 years ago
5 0

<u>Answer:</u> The initial momentum is 12 kg m/s, and the final momentum is 24 kg m/s

<u>Explanation:</u>

Momentum is defined as the force that keeps the object moving.  It is also defined as the product of mass and velocity of an object.

Mathematically,

p=m\times v     .......(1)

where,

p = momentum of the bowling ball

m = mass of the bowling ball

v = velocity of the bowling ball

  • <u>Calculating the initial momentum:</u>

We are given:

m=6kg\\u=\text{Initial speed}=2m/s

Putting values in equation 1, we get:

p=6kg\times 2m/s\\\\p=12kg.m/s

  • <u>Calculating the final momentum:</u>

We are given:

m=6kg\\u=\text{Final speed}=4m/s

Putting values in equation 1, we get:

p=6kg\times 4m/s\\\\p=24kg.m/s

Hence, the initial momentum is 12 kg m/s, and the final momentum is 24 kg m/s

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The lower the value of the coefficient of friction,the_the resistance to sliding​
malfutka [58]

Answer:

lower

Explanation:

The lower the value of the coefficient of friction, the lower the resistance to sliding.

The coefficient of friction is the ratio of the frictional force and the normal force pressing two surfaces in contact together.

               U  = \frac{F}{N}  

U is the coefficient of friction

F is the frictional force

N is the normal force

 We see that coefficient of friction is directly proportional to frictional force.

7 0
3 years ago
Motion maps for two objects, Y &amp; Z, are shown.
serg [7]

Answer: it’s 3 seconds

Explanation:

5 0
2 years ago
The lesser the mass, the greater the acceleration for the given value of force. Why does this happen?
Tju [1.3M]
Newtons law states F=ma
so F/m=a
in addition it makes logical sense the lighter an object the easier it is to accelerate its velocity form 0 to some quantity 
5 0
3 years ago
Guys I really need help with these 2 questions , it's for my final plz help asap
mars1129 [50]

Answer:

(1) Initial speed, u=0

    Final speed, v=165.76m/s

    Average speed, v_a_v_g=82.87m/s

(2) Force of gravity, F_g=12.8\times10^1^5N

Explanation:

(1)

Given,

Distance, S=300meter

Time, t=3.62second

It is given that drag racer started at rest.

So Initial speed, u=0

Using Newton's second equation of motion,

S=ut+\frac{1}{2}at^2\\300=0+\frac{a\times3.62^2}{2} \\a=45.79m/s^2

Newton's first equation of motion,

v=u+at\\=0+45.79\times3.62\\=165.76 m/s

So, Final speed, v=165.76m/s

Average speed is defined as totle distance divided by totle time.

v_a_v_g=\frac{S}{t}\\=\frac{300}{3.62} \\=82.87m/s

So, Average speed, v_a_v_g=82.87m/s

(2)

Gravitation: It is the natural phenomenon in which two different bodies attract each other by virtue of their masses.

       According to Newton's law of gravitation, the force of attraction between two bodies is directly proportional to the masses of the bodies and inversely proportional to square of distance between centers of mass of the bodies.

                         F_g\propto\frac{m_1m_2}{r^2} \\F_g=G\frac{m_1m_2}{r^2}where Gis constant of proportionality and known as gravitation constant.

Given,

Mass of Jupiter, m_1=1.9\times10^2^7kg

Mass of Ganymede, m_2=1.48\times10^2^3kg

Distance between their centers of mass, r=1.21\times10^1^2meter

F_g=G\frac{m_1m_2}{r^2}\\=\frac{6.67\times10^-^1^1\times1.9\times10^2^7\times1.48\times10^2^3}{(1.21\times10^1^2)^2} \\=12.8\times10^1^5N

So, Force of gravity, F_g=12.8\times10^1^5N

7 0
3 years ago
a 2kg ball moving at speed 5m/s hits a wall .the force exerted by the wall on the ball is 100n .if the collision is perfectly el
levacccp [35]

Answer:

0.2s

force = change in momentum/ time

time = change in momentum/time

Explanation:

first, let's find the change in momentum

pf-pi

5×(-2) - 5× 2

-20kgm/s = 20kgm/s(by changing the direction of whole system)

time = change in momentum/time

               20/100

                 <u> 0.2s</u>

4 0
3 years ago
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