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Romashka-Z-Leto [24]
3 years ago
5

In free fall, the ___________ of velocity of the object changes

Physics
1 answer:
aleksley [76]3 years ago
5 0

Answer:

Magnitude and direction.

Explanation:

Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.

Mathematically, velocity is given by the equation;

Velocity = \frac{distance}{time}

Gravity is considered to be a universal force of attraction which acts between all objects that has both mass, energy and occupy space. Therefore, it acts in such a way as to bring objects together.

Additionally, the gravity of earth makes it possible for all physical objects to possess weight.

Hence, in free fall, the magnitude and direction of velocity of the object changes.

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two objects are in uniform circular motion at the same speed but at different radii. the ones with the __ radius has the largest
Cerrena [4.2K]

Answer:the one with the smaller radius has the highest centripetal force

Explanation:

5 0
3 years ago
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During a hurricane, the atmospheric pressure inside a house may blow off the roof because of the reduced pressure outside. If ai
m_a_m_a [10]

Answer:

817.5 Pa

Explanation:

From Bernoulli's equation, considering thst there is no height difference then

P1+½d(v1)²=P2+½d(v2)²

P1-P2=½d(v2²-v1²)

∆P=½d(v2²-v1²)

Where P represent pressure, d is density and v is velocity. Subscripts 1 and 2 represent inside and outside. ∆P is tge change in pressure

Given the speed at roof top as 128 km/h, we convert it to m/s as follows

128*1000/3600=35.555555555555=35.56 m/s

Velocity at the bottom of roof is 0 m/s

Density is given as 1.293 kg/m³

∆P=½*1.293*(35.56²-0)=817.5 Pa

5 0
3 years ago
The pic says everything, thank you !
Alenkasestr [34]

Answer:

1/5 or .2

Explanation:

you put miles over seconds 3/15 then simplify to 1/5 to get miles per second

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Chuge%5Cmathcal%5Ccolorbox%7Bred%7D%7B%5Ccolor%7Bpink%7D%7B%E3%82%AF%E3%82%A8%E3%82%B9%E3
nirvana33 [79]

Answer:

The theory of Relativity state that :<u>Special relativity applies to all physical phenomena in the absence of gravity and General relativity explains the law of gravitation and its relation to other forces of nature. </u>

3 0
3 years ago
A metal block of mass 265 g rests at a point 2.4 m from the center of a horizontal rotating wooden platform. The coefficient of
FrozenT [24]

Answer:

The minimum angular velocity of the platform what whould the block slides away is w= 2.26 rad/s.

Explanation:

m= 0.265 kg

r= 2.4 m

μ= 0.257

g= 9.8 m/s²

W= m * g

W= 2.597 N

Fr= μ * W

Fr= 0.66 N

∑F = m * ac

W+Fr = m * ac

(W+ Fr) / m = ac

ac= 12.29 m/s²

ac= w² * r

√(ac/r)= w

w= 2.26 rad/s

3 0
4 years ago
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