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Andrew [12]
3 years ago
7

A block falls from a ledge 10 m high. Just before it hits the ground, its kinetic energy is......

Physics
2 answers:
vladimir2022 [97]3 years ago
5 0
I would say D because an object's potential energy turns into kinetic energy as it falls.
Roman55 [17]3 years ago
5 0

It would be D because the potential energy converts to kinetic energy on the way down. Hope it helped. :)

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if the strength of the magnetic feild at a is 200 units and the strength of the magnetic field at b is 50 units what is the dist
IrinaVladis [17]

It would be 100 units.

7 0
3 years ago
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an object at rest will remain at rest and an object in motion stays in straight-line motion unless acted upon by a_____ or unbal
LekaFEV [45]
Equal is the answer your looking for
5 0
3 years ago
Three cars, car x, car y, and car z, begin accelerating from rest, at the same time. car x is more massive than car y, which is
grigory [225]

When the net force exerted on each car is identical. after 10 seconds, the amount of momentum is same for all cars.

<h3>What is impulse?</h3>

The change in momentum is equal to the product of impact force applied while colliding and time for that impact.

F. t = m (Vf -Vi)

where, Vf is the final velocity and Vi is the initial velocity.

For car X, Fx x t = Mx Vx

For car Y, Fy x t = My Vy

For car Z, Fz x t = Mz Vz

The force applied is same for all and the the time is also same equal to 10 seconds. The impulse is same for all the cars.

Thus, the three cars have same momentum.

Learn more about impulse.

brainly.com/question/16980676

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6 0
2 years ago
Plz help to answer the sheet above thanks
AysviL [449]

Answer:

(B) sound/kinetic

(E) Gravitational/kinetic

(F) mechanical/sound

Explanation:

(B) the useful energy transfer is sound but a by product of that is kinetic or mechanical energy because of the vibrations needed to make sound

(E) the useful energy transfer is Gravitational potential but a by product of that is kinetic or mechanical energy

(F) the useful energy transfer is kinetic or mechanical energy but the byproduct is noise and occasionally heat

6 0
3 years ago
A toy rocket is launched with an initial velocity of 10.0 m/s in the horizontal direction from the roof of a 38.0-m-tall buildin
Bas_tet [7]

Answer:

Explanation:

Consider downward displacement first .

downward displacement h = 38 m .

downward acceleration = g

downward initial velocity u = 0

h = ut + 1/2 g t ²

38 = 0 + 9.8 t ²

t = 1.97 s

During this period , there will be horizontal displacement with initial velocity u = 10 m /s and acceleration a = 1.6 m /s²

s = ut + 1/2 a t²

= 10 x 1.97 + .5 x 1.6 x 1.97²

= 19.7 + 3.10

= 22.8 m

3 0
3 years ago
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