9. While a ball falls to the ground, it accelerates continuously and so increases its momentum....
Homework Answers
It's the total momentum of a closed system that is conserved
Is we consider ball as the system, this system has an external acting on it which is gravity hence the momentum of the ball is not conserved
Looking at earth + ball as the system
pearth + pball = constant
If the ball is dropped then
Mball*Vball = -Mearth*Vearth
Hence the momentum of ball + earth system is constant
Momentum of only ball as a system is not conserved.
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9.
While a ball falls to the ground, it accelerates continuously and
so increases its momentum....
As a ball falls to the ground, it accelerates continuously and, therefore, increases its momentum. Why...
As a ball falls to the ground, it accelerates continuously and, therefore, increases its momentum. Why is not this a violation of the law of conservation of the linear moment?
Physics help A ball falls straight down in the xy plane. Its momentum is shown by...
Physics help
A ball falls straight down in the xy plane. Its momentum is shown by the red arrow. What is the ball's z component of angular momentum about location A?
Moment of Inertia/Conservation of Angular Momentum 10) Consider a cat in free-fall, as shown above (assume...
Moment of Inertia/Conservation of Angular Momentum 10) Consider a cat in free-fall, as shown above (assume no external torques act upon it). As it falls, the cat has an initial angular velocity of: o 1.6 rad/s, and an initial moment of inertia of: In=7.5x 10 kgm. If the cat extends its legs so that its moment of inertia increases to I nal12.0x10 kgm, what would be the cat's final angular velocity?
need answers for 5, 6,8-10 C) doubled speed v of the wheel center speed. 4. If...
need answers for 5, 6,8-10
C) doubled speed v of the wheel center speed. 4. If we push the handle at points A, B and to open the door (with equal forces), and point A at the edge, point C close to the door shaft, and point B at middle, you use the minimum force at point WA B) B C) с 5. (continued with Question 4) No matter how you push the door (different force, different Question 4 rotation...
A painting is purchased as an investment for $150. If its value increases continuously so that...
A painting is purchased as an investment for $150. If its value increases continuously so that it doubles every 6 years, then its value is given by the function V(t) = 150 2/6 for t > 0 where t is the number of years since the painting was purchased, and V(t) is its value in dollars) at time t. Find V(12) and V(18). V(12) = V(18) =
A ball is kicked from a location (7,0, -8) (on the ground) with initial velocity (-9,...
A ball is kicked from a location (7,0, -8) (on the ground) with initial velocity (-9, 14, -4) m/s. The ball's speed is low enough that air resistance is negligible. (a) What is the velocity of the ball 0.2 seconds after being kicked? (Use the Momentum Principle!) (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.2 seconds after it is kicked? the final velocity of the ball the...
A ball is kicked from a location < 8, 0, -9> m (on the ground) with...
A ball is kicked from a location < 8, 0, -9> m (on the ground) with initial velocity <-11, 17.0, -4> m/s. The ball’s speed is low enough that air resistance is negligible. (a) What is the velocity of the ball 0.3 s after being kicked? (Use the Momentum Principle!) v→= < , , > m/s (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.3 s after it...
*Problem 2.35 A ball is kicked from a location 9, Ο 4> m on the ground...
*Problem 2.35 A ball is kicked from a location 9, Ο 4> m on the ground with initial velocityく10 13 0 (a) What is the velocity of the ball 0.2 s after being kicked? (Use the Momentum Principle!) 6> m/s. The ball's speed is low enough that air resistance is negligible. m/s (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.2 s after it is kicked? C C...
A ball is kicked from a location < 6, 0, -9> m (on the ground) with...
A ball is kicked from a location < 6, 0, -9> m (on the ground) with initial velocity<-13, 17.0, -4> m/s. The ball's speed is low enough that air resistance is negligible (a) What is the velocity of the ball 0.6 s after being kicked? (Use the Momentum Principle!) 11.2 4 m/S (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.6 s after it is kicked? the arithmetic...
1) As a raindrop falls through the atmosphere, its speed initially changes as it falls toward...
1) As a raindrop falls through the atmosphere, its speed initially changes as it falls toward the Earth. Before the raindrop reaches its terminal speed, the magnitude of its acceleration A. increases B. decreases C. stays constant at zero D. stays constant at 9.8 m/s? E. stays constant at a value not equal to zero nor 9.8 m/s2 The position vector of a particle is given by r(t) = 2tî + 3t2ġ where ř is measured in metres and t...
Physics help
A ball falls straight down in the xy plane. Its momentum is shown by the red arrow. What is the ball's z component of angular momentum about location A?
Moment of Inertia/Conservation of Angular Momentum 10) Consider a cat in free-fall, as shown above (assume no external torques act upon it). As it falls, the cat has an initial angular velocity of: o 1.6 rad/s, and an initial moment of inertia of: In=7.5x 10 kgm. If the cat extends its legs so that its moment of inertia increases to I nal12.0x10 kgm, what would be the cat's final angular velocity?
need answers for 5, 6,8-10
C) doubled speed v of the wheel center speed. 4. If we push the handle at points A, B and to open the door (with equal forces), and point A at the edge, point C close to the door shaft, and point B at middle, you use the minimum force at point WA B) B C) с 5. (continued with Question 4) No matter how you push the door (different force, different Question 4 rotation...
A painting is purchased as an investment for $150. If its value increases continuously so that it doubles every 6 years, then its value is given by the function V(t) = 150 2/6 for t > 0 where t is the number of years since the painting was purchased, and V(t) is its value in dollars) at time t. Find V(12) and V(18). V(12) = V(18) =
A ball is kicked from a location (7,0, -8) (on the ground) with initial velocity (-9, 14, -4) m/s. The ball's speed is low enough that air resistance is negligible. (a) What is the velocity of the ball 0.2 seconds after being kicked? (Use the Momentum Principle!) (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.2 seconds after it is kicked? the final velocity of the ball the...
*Problem 2.35 A ball is kicked from a location 9, Ο 4> m on the ground with initial velocityく10 13 0 (a) What is the velocity of the ball 0.2 s after being kicked? (Use the Momentum Principle!) 6> m/s. The ball's speed is low enough that air resistance is negligible. m/s (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.2 s after it is kicked? C C...
A ball is kicked from a location < 6, 0, -9> m (on the ground) with initial velocity<-13, 17.0, -4> m/s. The ball's speed is low enough that air resistance is negligible (a) What is the velocity of the ball 0.6 s after being kicked? (Use the Momentum Principle!) 11.2 4 m/S (b) In this situation (constant force), which velocity will give the most accurate value for the location of the ball 0.6 s after it is kicked? the arithmetic...
1) As a raindrop falls through the atmosphere, its speed initially changes as it falls toward the Earth. Before the raindrop reaches its terminal speed, the magnitude of its acceleration A. increases B. decreases C. stays constant at zero D. stays constant at 9.8 m/s? E. stays constant at a value not equal to zero nor 9.8 m/s2 The position vector of a particle is given by r(t) = 2tî + 3t2ġ where ř is measured in metres and t...
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