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3 years ago

Which motions are the components of projectile motion?

Physics

2 answers:

vazorg [7]3 years ago

8 0

Answer:Contains both Horizontal and Vertical Motions

Explanation:

UkoKoshka [18]3 years ago

5 0

Projectile motion contains both horizontal and vertical motion.

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Suppose a car is moving in a straight line and steadily increases its speed. It moves from 35 km/h to 40 km/h the first second a

snow_lady [41]

Answer:

Explanation:

the first 35 to 40 acceleration will be 5 same as 40 to 45 ,

5+5=10

7 0

3 years ago

2. A uniform wire of resistance R is stretched until its length doubles. Assuming its density and resistivity remain constant, w

never [62]

Answer:

Resistance is quadrupled.

Explanation:

Solving this requires us to use the formula of resistivity.

Resistivity is usually said to be the measure of the resistance of a particular size of any given material to the electrical conduction. It is mathematically represented as

ρ = RA/L, where

ρ = the resistivity of the given material

R = the resistance of the material

A = the area of the material

L = length of the material.

From the question, we're told that the length is doubled with the resistivity and density remaining constant. If the density is constant, this makes the volume constant as well.

Volume, V = A * L. We're then told that the length is doubled. If the length is doubled, for the volume to remain constant, then the area must be halved.

Volume, V = A/2 * 2L

Making, Resistance R, subject of the formula, we have

R = ρL/A.

Since resistivity is constant and the area is halved, we then have

R = 2L / (1/2A)

R = 4L / A

If the length is doubled, we have the resistance to be quadrupled

3 0

3 years ago

A girl takes her dog for a walk on a sunny beach. Find the force of gravity between the 45-kg girl and her 11-kg dog when they a

Lady_Fox [76]

The gravitational force acting between them is $8.25*10^-^9N$

Data given;

M1 = 45kg
M2 = 11kg
r = 2.0m
G = $6.67*10^-^1^1m^3kg^-^1s^-^1$

To solve this question, we need to apply gravitational force or energy formula.

<h3>Gravitational Force</h3>

This states that the force of attraction between two bodies is equal to the product of their bodies and inversely proportional to the square of their distance apart.

Mathematically;

$F = \frac{GM_1M_2}{r^2} \\$

let's substitute the values and solve

$F = \frac{Gm_1m_2}{r^2}\\F = \frac{6.67*10^-^1^1 * 45 * 11}{2^2}\\F = 8.25*10^-^9N$

The force of gravity acting between them is $8.25*10^-^9N$

Learn more on gravitational force here;

brainly.com/question/11359658

4 0

3 years ago

What do we mean when we describe forces as balanced?

aivan3 [116]

Well, first, let's recognize that there is no such thing as a force that is
balanced or unbalanced.

When we say that a group of two or more forces is balanced, we mean
that when you add up all the magnitudes and directions of the forces, the
whole group adds up to zero, so they have the same net effect as if there
were no force at all.

3 0

4 years ago

Which phrase describes a planet’s period of rotation? A. the shape of its orbit B. its tilt relative to the sun C. one complete

SashulF [63]

C. one complete spin on its axis because the rotation is referring to the planet's period of rotation. D is called a revolution. B determines the seasons on the planets. A is called an ellipse.

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3 years ago

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