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Ne4ueva [31]
3 years ago
14

A speeding car collides with a wall (attached to Earth). Consider the car-Earth system to be isolated. A loud sound is produced

in the collision, and the car is deformed. What can you say about the momentum of the car-Earth system in this case?
Physics
2 answers:
AleksAgata [21]3 years ago
8 0
That the total momentum of the system is conserved
allsm [11]3 years ago
7 0

Answer:

Momentum of car and Earth as a system will remain conserved

Explanation:

As we know that momentum conservation is applicable when system has no external force on it

So here we will say

F = \frac{\Delta P}{\Delta t}

now we know that

if we will have F = 0

0 = \frac{\Delta P}{\Delta t}

so here we can say

\Delta P = 0

now since Earth and car as a whole system is considered then there is no external force on that system.

So here momentum as a whole will remain conserved.

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allochka39001 [22]

Answer:

The Current decreases

Explanation:

HOPE THIS HELPS!

4 0
2 years ago
A planet in elliptical orbit around a star moves from the point in its orbit furthest from the star (A) to the closest point (P)
Virty [35]

Answer:

Zero work done,since the body isn't acting against  or by gravity.

Explanation:

Gravitational force is usually  considered as work done against gravity (-ve) and work by gravity ( +ve ) and also When work isn't done by or against gravity work done in this case is zero.

Gravitational force can be define as that force that attracts a body to any other phyical body or system that have mass.

The planet been considered as our system in this case is assumed to have mass, and ought to demonstrate such properties associated with gravitational force in such system. Such properties include the return of every object been thrown up as a result of gravity acting downwards. The orbiting nature of object along an elliptical part when gravitational force isn't acting on the body and it is assumed to be zero.

6 0
3 years ago
How do Air molecules enable sound to travel from a radios speaker to your ears?
MatroZZZ [7]
The radio frequencies push one air molecule that then bumps into a different air molecule.....which then hits another and another causing a line of crashing molecules that lead inside your ear and hits your ear drum causing it to vibrate which causes the sounds.
6 0
3 years ago
Read 2 more answers
Define kinetic energy and derive its relation.
IRINA_888 [86]

Answer:

The kinetic energy of a body is the energy that it possessed due to its motion. Kinetic energy can be defined as the work needed to accelerate an object of a given mass from rest to its stated velocity. Kinetic energy depends upon the velocity and the mass of the body.

3 0
3 years ago
A baby carriage is sitting at the top of a hill that is 35 m high. The
Lemur [1.5K]
P=M(mass)G(Gravity)H(Height)

Gravity=9.8

M=1.5 G=9.8 H=35

so multiply all

=514.5 potential energy

5 0
2 years ago
Read 2 more answers
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