Homework Answers
Integral of F.dt is impulse and impulse is equal to the change in linear momentum.
Integral of F.dx is equal to work done and work done is equal to the change in KE.
So the correct option is:
(d) linear momentum, KE
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rces and are II. Conceptual Questions (20 pts. total) t5 6. Force. (7 pts.) Assume F...
7. (20 pts) A force of 50 N is used to move a 5 kg box...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velo city of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
7. (20 pts) A force of 50 N is used to move a 5 kg box...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. 2. How much work was done on the box? b. If the movement takes 10 seconds, what is the average vclocity of the box during the move c What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a...
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a net external force of zero. 2)TF Momentum is conserved in an isolated system. 3) TT The definition of work is W = Fdcos(0) 4) T (F) The spring force is proportional to the displacement of the spring end. 5) O T Engines and generators can be 100% efficient. 6) DF The impulse is equal to the change in momentum. 7) DF In an isolated...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. a. How much work was done on the box?...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velocity of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
Can the person that takes this question please show step by step of how answers were...
Can the person that takes this question please show
step by step of how answers were figured. Pls explain each part for
me to understand. This is my second request as a person that
attempted to assist prior notes/steps were difficult to
follow/read. And please use the given equations, since I need to
understand how/where/when to use them.
Thank you.
Problem 2, it might help to let you know that you can
choose where G.P.E. is non-zero and zero when...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
Linear Momentum of an object is conserved At all times b. Only when the net external...
Linear Momentum of an object is conserved At all times b. Only when the net external force on the object is Zero When the net external torque on the object is Zero d. Never A truck of mass 4000 (kg) is moving at 10 (m/s). A car of mass 1000 (kg) is moving at 40 (m/s). So, the truck’s momentum, compared to the car, is Greater b. Smaller c. the same d. Cannot say without knowing their accelerations A 1000...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velo city of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. 2. How much work was done on the box? b. If the movement takes 10 seconds, what is the average vclocity of the box during the move c What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a net external force of zero. 2)TF Momentum is conserved in an isolated system. 3) TT The definition of work is W = Fdcos(0) 4) T (F) The spring force is proportional to the displacement of the spring end. 5) O T Engines and generators can be 100% efficient. 6) DF The impulse is equal to the change in momentum. 7) DF In an isolated...
7. (20 pts) A force of 50 N is used to move a 5 kg box 30 m across a level floor. a. How much work was done on the box? b. If the movement takes 10 seconds, what is the average velocity of the box during the move? c. What is the average kinetic energy of the box during the move? d. What is the change in potential energy as a result of this move?
Can the person that takes this question please show
step by step of how answers were figured. Pls explain each part for
me to understand. This is my second request as a person that
attempted to assist prior notes/steps were difficult to
follow/read. And please use the given equations, since I need to
understand how/where/when to use them.
Thank you.
Problem 2, it might help to let you know that you can
choose where G.P.E. is non-zero and zero when...
Question 1 1 pts What is the kinetic energy of a man who weighs 980N who is riding in a car traveling 40 km per hour? Express your answer in Joules, but don't type the unit in the answer box. Round to the nearest whole number. (Careful with the units) 1 pts Astudent slides her 80.0-kg desk across the level floor of her dormitory room a distance 4.00 m at constant speed. If the coefficient of kinetic friction between the...
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