What is the kinetic energy of a 1.0-kg billiard ball that moves at 5.0 m/s? A. 5.0 J B. 6.5 J C. 10.0 J D. 12.5 J
Answers
The kinetic energy of a moving body can be determined from its mass and velocity of the body. The kinetic energy of 1.0-kg billiard ball that moves at 5.0 m/s is 12.5 J. Hence, option D is correct.
What is kinetic energy?
Kinetic energy is a form of energy generated in body by virtue of its motion. It is directly proportional to the mass and square of velocity of the body. The equation of kinetic energy is written as follows:
KE = 1/2 mv²
When a body starts moving its kinetic starts to increase while the potential energy drops out. However the total mechanical energy in the system will be conserved.
The mass of the billiard ball is given 1 kg and the velocity is 5 m/s. Then the kinetic energy of the ball is calculated as follows:
KE = 1/2 1 kg × ( 5 m/s )².
= 1/2 × 25
= 12.5 J.
Therefore, the kinetic energy of 1.0-kg billiard ball that moves at 5.0 m/s is 12.5 J. Hence, option D is correct.
To find more about kinetic energy, refer the link below:
#SPJ5
KE = 0.5*m*v²
Given m = 1.0 kg, v = 5.0 m/s, so
KE = 0.5*1.0*(5.0)² = 12.5 J
The answer is D.
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Answer:
the velocity of a moving body relative to another body is called relative velocity.
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b. The larger one accelerates at 3.33 m/s2, while the smaller one accelerates at 100 m/s2.
c. The larger one accelerates at 100 m/s2, while the smaller one accelerates at 3.33 m/s2.
d. The ...
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Answer:
B) The larger one accelerates at 3.33 m/s² while the smaller one accelerates at 100 m/s².
Explanation:
Parameters given:
Mass of larger asteroid = 3000 kg
Mass of smaller asteroid = 100 kg
Force of collision = 10000 N
Since both of them experience the collision force, we can find how that force causes them to accelerate by using the formula of force:
F = m*a
=> a = F/m
For the larger one,
a = 10000/3000 = 3.33 m/s²
For the smaller one,
a = 10000/100 = 100 m/s²
F = M A
A = F / M
If a 10,000N net force acts on a 3,000 kg object, then the object's
acceleration is (10,000N / 3,000kg) = 3-1/3 m/s² for as long as the
force on it persists, and zero after that.
If a 10,000N net force acts on a 100 kg object, then the object's
acceleration is (10,000N / 100kg) = 100 m/s² for as long as the
force on it persists, and zero after that.
Those appear to be the numbers in choice-b, but the description
of the event and the situation is misleading.
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Answer:
a= 92. 13 m/s²
Explanation:
Given that
Amplitude ,A= 0.165 m
The maximum speed ,V(max) = 3.9 m/s
We know that maximum velocity in the SHM given as
V(max) = ω A
ω=Angular speed
A=Amplitude
ω=23.63 rad/s
The maximum acceleration given as
a = ω² A
a= (23.63)² x 0.165 m/s²
a= 92. 13 m/s²
Therefore the maximum magnitude of the acceleration will be 92. 13 m/s².
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Answer:
A simple depolarization can be defined as any change that occurs in a neuron that results to it being more positive than resting potential, but an action potential happens only when the simple depolarization reaches the threshold or optimum level.
Explanation:
A simple depolarization can be defined as any change that occurs in a neuron that results to it being more positive than resting potential, but an action potential happens only when the simple depolarization reaches the threshold or optimum level.