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Alina [70]
3 years ago
13

1.

Physics
1 answer:
nlexa [21]3 years ago
7 0

Answer:

By using Pythagoras Formula

Explanation:

Measure the distance man is sliding. “It will be c”

Measure the distance of between the tower and a post with which wire is attached. It will be “b”

Then apply Pythagoras Formula c2=a2 + b2 and solve it.

It will give the height of tower.

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A car in a roller coaster moves along a track that consists of a sequence of ups and downs. Let the
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Explanation:

r=A(1 m/s)t^i+A((1 m/s3)t3−6(1 m/s2)t2)^j,

dr / dt = A i  + (3 A t² - 6 x 2 t ) j

At t = 2

dr / dt = A i  + (12A - 24 A ) j  = A i - 12 A j .

Since slope is negative so velocity is downwards , hence it is descending

b ) velocity = dr / dr =  .  A i  + (3 A t² - 6 x 2 t ) j

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How does heat affect the thermal energy of an object that is colder than the qir
podryga [215]

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3 years ago
A 0.86 kg rock is projected from the edge of the top of a building with an initial velocity of 8.65 m/s at an angle 46◦ above th
Georgia [21]

Answer:

Height of the building = 11.4 m

Explanation:

As we know that the stone is projected at an angle 46 degree with speed 8.65 m/s

so the two components of the speed is given as

v_x = 8.65 cos46

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vertical component of the speed is given as

v_y = 8.65 sin46

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now we know that the ball strike at horizontal distance of 13.7 m

so we will have

x = v_x t

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y = v_y t + \frac{1}{2}at^2

y = 6.22(2.28) - \frac{1}{2}(9.81)(2.28^2)

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3 years ago
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