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defon
2 years ago
4

For projectile motion on level ground assuming negligible air resistance (the initial angle being neither 0o nor 90o): when is t

he magnitude of velocity a maximum (maxima)?
Physics
1 answer:
e-lub [12.9K]2 years ago
7 0

a) The maximum's Vy is zero, but Vx is not, hence V (vector) is not zero.

b) At its maximum height, it is at its minimum height. When it strikes the earth, it reaches its peak.

c) No, because the direction of V(vector) is never the same.

d) At the same height, yes.

<h3>What is Projectile Motion?</h3>

Projectile Motion refers to the movement of an object thrown into the air. After being launched by the first force, the object only then feels the effects of gravity.

The object is known as a projectile, and its course is known as its trajectory.

When an object travels through the air, it meets a frictional force called air resistance, which slows its velocity. Air resistance has a substantial effect on trajectory motion, but because it is difficult to calculate, it is omitted in beginning physics.

The most fundamental idea in Projectile Motion is that horizontal and vertical motions are independent of one another.

To learn more about Projectile Motion, visit:

brainly.com/question/11049671

#SPJ4

The correct question is: For projectile motion

on level ground assuming negligible air resistance, with

the initial angle being neither 0° nor 90° :

(a) Is the velocity ever zero?

(b) When is the velocity a minimum? A maximum?

(c) Can the velocity ever be the same as the initial velocity at a time other than at t = 0?

(d) Can the speed ever be the initial speed at a time other than at t = 0?

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Explanation:

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Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of: Select one:
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Fire spreading from a wall to a nearby couch due to radiant heat transfer is an example of heat reflectivity.

<h3>What is heat reflectivity?</h3>

When sunlight and other light sources strike a material's surface, its reflectance is measured. This number can be used to characterize a surface's characteristics in terms of surface finish. Another name for reflection is reflectivity.

This is a measurement of the amount of energy that material reflects at a specific wavelength. A value between 0 and 1 can also be used to represent reflectivity (or a percentage between 0 and 100).

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