Actually its three way
Neutrons
Electrons
protons
•wind
•snow
•high tide/low tide
•thunder/lightning storms
For number 15, the work that was done on the satellite force is zero because in space, there are no other forces or work that is acting upon an object. Based on the work-kinetic energy theorem, there was no change in speed of because there was not work done and change in kinetic energy.
For number 16,
W = d (K.E.)
35/d = (50)²/(100)²
35/d= 1/4
d= 35 x 4
d= 140 m
It will skid for 140 meters. Based on the law of the conservation of energy, kinetic energy is converted into sound, heat, and motion once the car goes to a complete stop.
For number 17, the energy required to walk up the stairs is higher compared to walking in a horizontal plane at the same speed because walking up the stairs has both vertical and horizontal components which adds up more distance. Walking up the stairs is doing work against gravity.
For number 18, Wfnet = delta KE
The equation of work energy theorem states that particle speed becomes lowers as the force of sliding friction is the only force that is acting on the object.
The problem arose due to a difference in length. This was due to father not knowing the exact length of shoe used by the son. And this can be mitigated by the use of shoe fillers.
The length of an object implies how long the object is. And it is one of the fundamental unit of quantities measured in SI unit of meters.
Considering the given question, it can be observed that the father do not know the exact length of shoe that would fit the son appropriately. Thus the realized problem of the pair of shoes too long arose due to difference in length of the pair of shoes and the son's leg. This variation would not have occurred if the exact length of pair of shoes has been bought.
To mitigate this little problem, shoe fillers can be used.
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C. course conditions
If the grass is grown then the golf ball will not be able to able to cover good ground distance