As a 2.0-kg object moves from $( 2 \tilde { \mathbf { i } } + 5 \tilde { \mathbf { j } } )$ m to $( 6 \tilde { \mathbf { i } } - 2 \tilde { \mathbf { j } } )$ m,the constant resultant force acting on it is equal to $( 4 \tilde { \mathbf { i } } - 3 \tilde { \mathbf { j } } )$ N.If the speed of the object at the initial position is 4.0 m/s,what is its kinetic energy at its final position?
A)62 J
B)53 J
C)73 J
D)86 J
E)24 J

Question

Quizplus · Accepted Answer

The Answer of As a 2.0-kg object moves from $( 2 \tilde { \mathbf { i } } + 5 \tilde { \mathbf { j } } )$ m to $( 6 \tilde { \mathbf { i } } - 2 \tilde { \mathbf { j } } )$ m,the constant resultant force acting on it is equal to $( 4 \tilde { \mathbf { i } } - 3 \tilde { \mathbf { j } } )$ N.If the speed of the object at the initial position is 4.0 m/s,what is its kinetic energy at its final position?
A)62 J
B)53 J
C)73 J
D)86 J
E)24 J

As a 20-Kg Object Moves From Moves (2i~+5j~)( 2 \tilde { \mathbf { i } } + 5 \tilde { \mathbf { j } } )(2i~+5j~​)

As a 20-Kg Object Moves From Moves $( 2 \tilde { \mathbf { i } } + 5 \tilde { \mathbf { j } } )$