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Tanya [424]
3 years ago
6

Which statement explains how gravity and inertia work together?

Physics
2 answers:
-Dominant- [34]3 years ago
6 0
A. They change the motion of objects
Rudik [331]3 years ago
3 0

Answer:

Therefore, A.They change the motion of objects.

Explanation:

Gravity force that attracts a body toward the center of the earth, or toward any other physical body having mass.

Inertia : is a property of matter by which it continues in its existing uniform motion in a straight line, unless that state is changed by an external force.

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Professional baseball pitchers deliver pitches that can reach the blazing speed of 100 mph (miles per hour). A local team has dr
Wittaler [7]

Answer:

A. ) K =126. 7 J

B. ) h= 91.1 m.

Explanation:

A)

  • Assuming no air resistance, once released by the pitcher, the speed must keep constant through all the trajectory, so the kinetic energy of the ball can be expressed as follows:

       K = \frac{1}{2}*m*v^{2}  =  \frac{1}{2}*0.142 kg*(42.24m/s)^{2} = 126.7 J (1)

B)

  • Neglecting air resistance, total mechanical energy must be the same at any point, so, if we choose the ground level as the zero reference level for the gravitational potential energy, and assuming that the ball attains this kinetic energy just before striking ground, this value must be equal to the gravitational potential energy just before be dropped, so we can write the following equality:

        U_{o} = K_{f} = 126. 7 J (2)

        ⇒ m*g*h = 126. 7 J

  • Solving for h, we get:

       h = \frac{K_{f}}{m*g} = \frac{126.7J}{0.1420kg*9.8m/s2} = 91.1 m (3)

4 0
3 years ago
Generally, weather patterns in the U.S. move _____.
blagie [28]
West to east.

The earth is spinning on its own axis. Thus, the area of the equator directly hit by the sun's heat and more solar radiation compared to any other area. That same heat warmth the atmosphere. Warm air rises towards the pole which is cooler. This is the reason of constant movement of the atmosphere.

The Coriolis force governed the air flows towards the pole. While the earth is spinning plus the movement of air north or south, the air follows a <span>curved path, toward the east.</span>
5 0
3 years ago
Read 2 more answers
OMG:
wariber [46]
WHATT NOOOOOO DRARRY
4 0
3 years ago
Read 2 more answers
George Washington Gale Ferris, Jr., a civil engineering graduate from Rensselaer Polytechnic Institute, built the original Ferri
MA_775_DIABLO [31]

Answer:

KE = 4217 J

Explanation:

As we know that the wheel is rotated at constant angular speed

so here we can say that the angular speed is given as

\omega = \frac{2\pi}{T}

\omega = \frac{2\pi}{2 \times 60}

\omega = 0.052 rad/s

now the moment of inertia of all passengers is given as

I = 36(60)(\frac{76}{2})^2

I = 3119040 kg m^2

now work done by machine must be equal to kinetic energy of the system

so we will have

KE = \frac{1}{2}I\omega^2

KE = \frac{1}{2}(3119040)(0.052)^2

KE = 4217 J

7 0
4 years ago
a rectangular tank measures 12.5 metres long 10.0 wide and 2.0 metre high calculate the mass of the water in the tank when it is
Tom [10]

Answer:

250000kg

Explanation:

Mass =density * volume

Density=1000kg/m³

Volume=l*w*h

12.5*10.0*2.0=250m³

Mass=1000 *250

=250000kg

7 0
3 years ago
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