3 years ago

As an object falls in a gravitational field, its speed increases. This is an

Physics

2 answers:

jarptica [38.1K]3 years ago

6 0

Answer:

Explanation:

i just did the test with this question

kow [346]3 years ago

3 0

The answer is
D. Kinetic energy

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a pillow , a textbook and a paper airplane are dropped from the top of a tall building at the same time. consider what you have

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A textbook would hit the ground first

Factors:

-Textbook weighs most

-Pillow is flat and fluffy not very aerodynamic) also is very light

-Paper airplane will glide to the ground do to its wings and will hit the ground last

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3 years ago

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Answer:

Explanation:

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A force parallel to the x-axis acts on a particle moving along the x-axis. This force produces potential energy U(x) given by U(

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3 years ago

A typical jetliner lands at a speed of 146 mi/h and decelerates at the rate of (10.4 mi/h)/s. If the jetliner travels at a const

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jetliner is moving with speed 146 mi/h

now we will have

$v= 146 \frac{1609 m}{3600 s}$

$v = 65.25 m/s$

now if it moves with this speed for 1.5 s

so the displacement for above time

$d_1 = 1.5(65.25) = 97.9 m$

now the deceleration of jet is given as

$a = - 10.4 mi/h/s$

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now by kinematics

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$d_2 = 457.8 m$

so total displacement is given as

$d = d_1 + d_2$

$d = 97.9 + 457.8 = 555.7 m$

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2 years ago

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