I'm pretty sure the answer is B: <span>establish public doubt
Hope this helps!</span>
In order for work to be done a force must be transferred and the object must move.
Since the graph is a straight line so the slope will remain same at all points
So here slope is given as


Now here we can say that slope will represent the rate of change in the physical quantity on Y axis with respect to the quantity on X axis
So here we will have

so it is rate of work done
So slope of this graph will same as power of the object
Answer:
Ferrari would stop first.
Explanation:
The momentum of a moving body is given as:
momentum, P = mass of the body x its velocity
i. For the Freight,
mass = 5000 tons = 4535924 kg
speed = 10 mph = 4.4704 m/s
P = mv
= 4535924 x 4.4704
= 20.28 x 
P = 20.28 x
kgm/s
ii. For the Ferrari,
mass = 3250 lb = 1474.175 kg
speed = 250 mph = 111.76 m/s
P = mv
= 1474.175 x 111.76
= 16.48 x 
P = 16.48 x
kgm/s
Comparing the momentum of the two objects, the Ferrari would stop fist when break is applied.
Answer:
a)
, b)
, c) 
Explanation:
a) The system can be described by the Principle of Energy Conservation and Work-Energy Theorem:

The work done to compress the springs is:

The force needed to compress the springs is:


b) Spring potential energy is directly proportional to the squared of elongation. Then:



c) The force needed to compress the springs is:

