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Author Question: Discuss similarities and differences between KINETIC ENERGY and MOMENTUM. What will be an ideal ... (Read 88 times)

renzo156

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on: Jul 27, 2018
Discuss similarities and differences between KINETIC ENERGY and MOMENTUM.
 
  What will be an ideal response?

Question 2

A 20-ton truck collides with a 1500-lb car and causes a lot of damage to the car.
 
  A) The force of collision on the truck is greater then the force of collision on the car.
  B) The force of collision on the truck is equal to the force of collision on the car.
  C) The force of collision on the truck is smaller than the of collision force on the car.
  D) The truck did not slow down during the collision.
  E) The car did not slow down during the collision.


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sultansheikh

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Reply #1 on: Jul 27, 2018
Answer to Question 1

K is a scalar whereas P is a vector. Both depend upon mass and speed, however K depends upon the square of the speed but P is simply proportional to velocity. Momentum is always conserved for an isolated system, but K might change if it changes to/from other energy forms.

Answer to Question 2

B


renzo156

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Reply #2 on: Jul 27, 2018
Thanks


sultansheikh

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Reply #3 on: Jul 27, 2018
Welcome :)


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