What is the principal difference between the theory of special relativity and the theory of general relativity?
4/20/2016 Ch 11 HW Ch 11 HW Due: 11:59pm on Monday, April 4, 2016 To understand how points are awarded, read the Grading Policy for this assignment. ± All Work and No Play Learning Goal: To be able to calculate work done by a constant force directed at different angles relative to displacement If an object undergoes displacement while being acted upon by a force (or several forces), it is said that work is being done on the object. If the object is moving in a straight line and the displacement and the force are known, the work done by the force can be calculated as ⃗ ∣ ∣ W = F ⋅s = F s c∣ ∣ ∣ ∣⃗ , ⃗ ⃗ where W is the work done by force F on the object that undergoes displacement s directed at angle θ relative toF . Note that depending on the value of cosθ , the work done can be positive, negative, or zero. In this problem, you will practice calculating work done on an object moving in a straight line. The first series of questions is related to the accompanying figure. Part A ⃗ What can be said about the sign of the work done by the force F 1 ANSWER: It is positive. It is negative. It