On a certain day rain was falling vertically with a speed of 35m/s . a wind started blowing after sometime with a speed of 12ms-1 in the east west direction . in which direction should the boy waiting in the bus stop hold his umbrella
Answers
Answered by
182
The resultant velocity of rain drops will be the vector sum of the rain drop speed (vertical) and the horizontal wind speed.
the magnitude of the result velocity of the rain drops =
√(12²+35²) = 37 m / sec
the direction of the resultant velocity vector with the vertical
= tan ⁻¹ (12/35) = 18.92 deg.
The umbrella should be pointed in the direction opposite to the resultant velocity of the rain drops. So it should be in the direction 18.92 deg. inclination to the vertical opposite to the direction of wind., towards East.
or, 71.08 deg. with the horizontal (East) towards the vertical
the magnitude of the result velocity of the rain drops =
√(12²+35²) = 37 m / sec
the direction of the resultant velocity vector with the vertical
= tan ⁻¹ (12/35) = 18.92 deg.
The umbrella should be pointed in the direction opposite to the resultant velocity of the rain drops. So it should be in the direction 18.92 deg. inclination to the vertical opposite to the direction of wind., towards East.
or, 71.08 deg. with the horizontal (East) towards the vertical
Answered by
36
The resultant velocity of rain drops will be the vector sum of the rain drop speed (vertical) and the horizontal wind speed.
the magnitude of the result velocity of the rain drops =
√(12²+35²) = 37 m / sec
the direction of the resultant velocity vector with the vertical
= tan ⁻¹ (12/35) = 18.92 deg.
The umbrella should be pointed in the direction opposite to the resultant velocity of the rain drops. So it should be in the direction 18.92 deg. inclination to the vertical opposite to the direction of wind., towards East.
or, 71.08 deg. with the horizontal (East) towards the vertical
Read more on Brainly.in - https://brainly.in/question/1377110#readmore
Similar questions