If a plane has an airspeed of 40 m/s and is experiencing a crosswind of 30 m/s, what is its ground speed in m/s?

Answers

Answer 1

Answer:

Answer:50 $ms^(-1)$

Explanation:

Let $v_(a)$ be the airspeed.

Let $v_(w)$ be the cross wind speed.

We know that,ground speed is the vector sum of airspeed and cross wind speed and airspeed is perpendicular to cross wind speed.

If $v_(1)$ and $v_(2)$ are two perpendicular vectors,the resultant vector has the magnitude $\sqrt{|v|_(1)^(2)+|v|_(2)^(2)}$

Given,

$v_(a)=40ms^(-1)\nv_(c)=30ms^(-1)$

So,the ground speed is $\sqrt{40^(2)+30^(2)}=√(2500)=50ms^(-1)$

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Please help....View the image and answer the question.

Identify the concept that the angle above represents and explain what it means in your own words.

Answers

Answer:

its a compass rose or a temperature that tells how is it hot or cold or it is to u where to go when needed like a map.And the angles is 6

Explanation:

How do you find cumulative effect of two or more forces acting on an object

Answers

The cumulative effect, or the resultant, of two or more forces is obtained by resolving the forces. This is done by addition if the forces act in the same direction through the same point and by subtraction if the forces act in opposite direcitons through the same point. However, if the forces are placed at an angle to one another, they must be resolved into their consituent x and y (and z if necessary) components and then their resultant is calculated.

Answer:

Cumulative effect of two or more force can be found using Vector sum of all forces

Explanation:

Force is a vector quantity and in order to find the resultant of two or more forces we have to use the concept of vector addition

here we know that vector addition rule is given as

$F_(net) = √(F_1^2 + F_2^2 + 2F_1F_2cos\theta)$

here we know that

$\theta$ = angle between two forces

so using this equation we can find the cumulative effect of two forces which are inclined at an angle with respect to each other

a bus travelling on a straight road at 25m/s accelerates uniformly at 5m/s squared for 2 seconds. find its speed in kilometres per hour

Answers

Answer:

126 kmh⁻¹

Explanation:

We can simply solve this by applying motion equations

where

v - final velocity

u - initial velocity

a-acceleration

t - time

v = u + at

= 25 + 5×2 = 35 ms⁻¹

= (35/1000)×3600 = 126 kmh⁻¹

Waves sometimes travel by squeezing together and then do what

Answers

Splash back into the ocean or river

A 2.00x10^6 hertz radio signal is sent a distance of 7.30x10^10 meters from earth to a spaceship orbiting Mars. How much time does it take for the radio signal to travel from earth to the spaceship