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Answer:
30% Increase
Step-by-step explanation:
we know 3 is 30% of 10 and 10+3=13 so we know that 13 is a 30% increase of 10.
Answer:
total distance travel by them to cross river is 17.3 m
Step-by-step explanation:
Assume A be the initial position of both person and B as apposite point to A
u component of velocity along SOUTH DIRECTION is 4 cos30 = 0.4330 m/s
v component of velocity along SOUTH DIRECTION is 4 cos90 = 0 m/s
total speed will be = 0.4330 + 0 = 0.4330 m/s
time taken![= \frac{width/ of/ river}{speed}](https://tex.z-dn.net/?f=%20%3D%20%5Cfrac%7Bwidth%2F%20of%2F%20river%7D%7Bspeed%7D)
time taken ![= \frac{30}{0.4330} = 69.3 sec](https://tex.z-dn.net/?f=%3D%20%5Cfrac%7B30%7D%7B0.4330%7D%20%3D%2069.3%20sec)
component of u in downstream direction = 4 cos120 = -0.25 m/s
component of v in downstream direction = 4 cos 0 = 0.5 m/s
total component in downstream will be -0.25 + 0.5 = 0.25
total distance travel by them to cross river is
downstream.