An incident ray traveling in a slower medium strikes a boundary with a faster medium. What happens when its angle of incidence i
2 answers:
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Explanation:
It is given that,
Velocity in East,
Velocity in North,
(a) The resultant velocity is given by :
(b) The width of the river is, d = 80 m
Let t is the time taken by the boat to travel shore to shore. So,
t = 16 seconds
(c) Let x is the distance covered by the boat to reach the opposite shore. So,
x = 48 meters
Hence, this is the required solution.
As we know that kinetic energy is given as
Here we can find the initial speed of puck A by momentum conservation
now here we will have initial kinetic energy of the mass is given as
now loss of energy is given as