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snow_lady [41]
3 years ago
13

Which will increase the kinetic energy of an object more, increasing its mass or increasing its speed? Why?

Physics
1 answer:
agasfer [191]3 years ago
4 0
Increasing its velocity will add to the kinetic energy more as the formula for kinetic energy is 0.5*m*v^2. (The speed will be squared making it greater)
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A box of weight 20N rests on a horizontal floor. A maximum horizontal force of 6N is required to move the box along the floor .I
Cloud [144]
Yo don’t click the link that guy says dude I think it’s like tracking or something
5 0
3 years ago
Read 2 more answers
Feng and Isaac are riding on a merry-ground. Feng rides on a horse at the outer rim of the circular platform, twice as far from
kogti [31]

Answer: The question is incomplete or missing details. here is the remaining part of the question ;

1. impossible to determine

2. half of Isaac’s

3. the same as Isaac’s

4. twice Isaac’s

The angular speed of feng will be the same as that of Isaac. Hence the answer is option 3

Explanation:

Since we have been told that both feng and isaac are riding on a merry go round i.e in a circular motion, irrespective of how fast one ride above the other, the angular speed will be constant since they are riding on a merry go round, as such both feng and isaac will maintain equal angular speed, hence the angular speed of feng will be the same as that of Isaac.

4 0
4 years ago
(a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter running at 10.0 m/ s?
Aleksandr-060686 [28]

Answer:

1.4719 m per sec

Explanation:

Hello

Kinetic energy is the energy associated with the movement of objects. Although there are many forms of kinetic energy  

the formula to use is

E=\frac{mv^{2} }{2}

where m is the mass of the object and v the velocity

lets see the kinetic energy of the sprinter running

E=\frac{65 Kg*10(\frac{m}{s} ^)){2} }{2} \\\\E=\frac{65 *100 }{2} \\E=3250 Joules\\\\

Now, the elephant must have the same kinetic energy

E=\frac{m*v_{2} ^{2} }{2} \\\\E*2=m*v_{2} ^{2}\\ \frac{2E}{m} =v_{2} ^{2} \\\sqrt{\frac{2E}{m} } =v_{2}  \\\\\\v_{2} =\sqrt{\frac{2*3250}{3000} }\\ \\v_{2} =1.4719 \frac{m}{s} \\\\

it works only the positive root, so the elephant must to  walk  to 1.4719 m/s to have the same kinetic energy.

Have a great day

8 0
3 years ago
Collision practice
NikAS [45]

Answer:

v_f=4\:\mathrm{m/s\: in\:Biff's\:direction}

Explanation:

Using the Law of Conservation of Momentum, we can set up the following equation:

m_2v_2-m_1v_1=m_fv_f, where m_1v_1 is Bruce's momentum and m_2v_2.

Plugging in given values, we get:

90\cdot7-45\cdot2=(90+45)v_f, \\v_f=\frac{540}{135}=\fbox{$4\:\mathrm{m/s}$}.

6 0
3 years ago
An object is moving to the left with a constant speed. What can be concluded about the forces acting upon the object?
MariettaO [177]

Answer: sum of forces is zero

Explanation: acording to the newton first law you can say that the sum of the forces acting over the object is zero no matter the direction of movement

good luck

mario

8 0
3 years ago
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