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3 years ago

17. Ms. Lopez is being chased by a Komodo dragon. She has an initial velocity of 7 m/s

Physics

1 answer:

exis [7]3 years ago

8 0

Answer:

Cant say for sure, its been a while sense ive done this, but im almost certain its 70

Explanation:

Take the zero off of your 10 s

Then go 7 m/s x 1 s

Which equals 7

Add the zero back to the end of your answer

10 -- 0 = 1 x 7 = 7 ++ 0 = 70

(PS, two of the same sign is just adding a number to the end of your original answer, that is not what it actually stands for in mathematical terms but that is what i'm using to make it clearer as to whats happening)

I'm not too good at explaining and formulas but i hope this helped

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David lifts a book 1.2 meters from the floor to the top of his desk. If the book weighed 0.50 kg, what is the gravitational pote

Anika [276]

Answer:

5.886 J

Explanation:

Given:

The mass of the book is, $m=0.5$ kg

Height of lift is, $\Delta h=1.2$ m

Acceleration due to gravity is, $g=9.81$ m/s²

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7 0

3 years ago

A soccer ball is kicked from the ground with an initial speed of 20.1 m/s at an upward angle of 47.8˚. A player 53.0 m away in t

e-lub [12.9K]

Answer:3.95 m/s

Explanation:

Given

Initial velocity(u) $=20.1 m/s$

launch angle $=47.8^{\circ}$

Player is 53 m away

Range of projectile

$R=\frac{u^2sin2\theta }{g}$

$R=\frac{20.1^2\times sin95.6}{9.8}$

R=41.02 m

so he need to run 53-41.02=11.98 m

Time of flight of projectile $=\frac{2usin\theta }{g}$

T=3.03 s

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3 years ago

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