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monitta
2 years ago
6

Kinetic energy is _____.inversely proportional to mass and velocity directly proportional to mass and velocity directly proporti

onal to mass and inversely proportional to velocity inversely proportional to mass and directly proportional to velocity
Physics
2 answers:
oee [108]2 years ago
7 0

Answer : The correct option is, directly proportional to mass and velocity.

Explanation:

Kinetic energy : It is associated with the state of motion of an object.

The formula used for kinetic energy is,

K.E=\frac{1}{2}mv^2

where,

m = mass of an object

v = velocity or speed of an object

From the formula of kinetic energy we conclude that,

The kinetic energy is directly proportional to the mass and the velocity of an object.

Hence, the kinetic energy is directly proportional to mass and velocity.

saw5 [17]2 years ago
3 0
Directly proportional to mass and velocity
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A 19 g bullet is fired into the bob of a ballistic pendulum of mass 1.3 kg. When the bob is at its maximum height, the strings m
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Answer:

217.43298 m/s

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Combined velocity of bullet and bob is given by

v^2-u^2=2as\\\Rightarrow v=\sqrt{2aL(1-cos\theta)+u^2}\\\Rightarrow v=\sqrt{2\times 9.81\times (1-cos60)+0^2}\\\Rightarrow v=3.13209\ m/s

As the momentum is conserved

m_1u=(m_1+m_2)v\\\Rightarrow u=\frac{(m_1+m_2)v}{m_1}\\\Rightarrow v=\frac{(0.019+1.3)\times 3.13209}{0.019}\\\Rightarrow v=217.43298\ m/s

The speed of the bullet is 217.43298 m/s

5 0
3 years ago
An object accelerates at 32 m/s² when a force of 71 N is applied to it. What is the object’s mass? show your work
amid [387]

Answer:

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2 years ago
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