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Vlada [557]
2 years ago
13

PLEASE HELP IM DESPERATE- what is the same and different about these two parabolas

Physics
1 answer:
krok68 [10]2 years ago
7 0
One is bigger than the other and they are the same shape
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A stone is dropped from rest from the top of a cliff into a pond below. If its initial height is 10 m, what is its speed when it
Brut [27]

Answer:

14 m/s

Explanation:

The motion of the stone is a free fall motion, so an accelerated motion with constant acceleration g = 9.8 m/s^2 towards the ground. So, we can use the following SUVAT equation:

v^2 -u^2 = 2gh

where

v is the final speed of the stone as it reaches the water

u = 0 is the initial speed

g = 9.8 m/s^2 is the acceleration

h = 10 m is the distance covered by the stone

Solving for v, we find

v=\sqrt{u^2+2gh}=\sqrt{0+2(9.8 m/s^2)(10 m)}=14 m/s

8 0
3 years ago
An inclinded plane makes work easier by increasing the distance and blank the force
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7 0
2 years ago
A vehicle with a manual transaxle can be cranked and started without depressing the clutch pedal. Technician A says the clutch i
SashulF [63]

Answer: Technician B

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6 0
3 years ago
A 45 kg bear slides, from rest, 11 m down a lodgepole pine tree, moving with a speed of 5.8 m/s just before hitting the ground.
Viefleur [7K]

Answer:

Explanation:

a )

change  in the gravitational potential energy of the bear-Earth system during the slide  = mgh

= 45 x 9.8 x 11

= 4851 J

b )

kinetic energy of bear just before hitting the ground

= 1/2 m v²

= .5 x 45 x 5.8²

= 756.9 J

c ) If  the average frictional force that acts on the sliding bear be F

negative work done by friction

= F x 11 J

then ,

4851 J -  F x 11 =  756.9 J

F x 11 = 4851 J -   756.9 J

= 4094.1 J

F = 4094.1 / 11

= 372.2 N  

4 0
3 years ago
What parts are found in an electric generator? Check all that apply.
Blizzard [7]

Answer:

an armature a permanent magnet brushes slip rings

Explanation:

6 0
3 years ago
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