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nadezda [96]
2 years ago
11

Any tips on how to get a good grasp of physics and chemistry?

Physics
1 answer:
Helga [31]2 years ago
4 0

Answer: Take notes and research into the subject more get extra help like tutoring if needed.

Explanation: ...

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3 years ago
An animal-rescue plane flying due east at 27 m/s drops a bale of hay from an altitude of 74 m . The acceleration due to gravity
padilas [110]

To solve this problem we will find the net speed, through the two components given. The vertical component will be found through the energy conservation theorem. Finally with speed we will find the momentum as a function of mass and speed. Given the weight we will divide it by the acceleration to find that mass.

The x component is given as

v_x = 27m/s

For conservation of energy the vertical component of velocity would be

PE = KE

mgh = \frac{1}{2} mv_y^2

v_y = \sqrt{2gh}

Here,

m = Mass

g = Gravitational acceleration

h = Height

Replacing we have that the vertical velocity is

v_y = \sqrt{2(9.8)(74)}

v_y = 38.08m/s

The magnitude of this velocity would be

|V| = \sqrt{v_x^2+v_y^2}

|V| = \sqrt{27^2+38.08^2}

|V| = 46.68m/s

Finally the momentum of the bale would be

p = mv

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p = (\frac{165}{9.8})(46.68)

p = 785.93kg\cdot m/s

Therefore the momentum of the bale the moment it strikes the ground is 785.93kg\cdot m/s

4 0
3 years ago
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