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m_a_m_a [10]
3 years ago
7

A Cessna aircraft has a liftoff speed of 120 km/h What minimum constant acceleration does the aircraft require to be airborne af

ter a takeoff run of 240 m
Physics
1 answer:
Lady_Fox [76]3 years ago
4 0

Answer:

<h3>2.3125m/s²</h3>

Explanation:

Using the equation of motion v² = u²+2aS

v is the final velocity = 120km/hr

120km/hr = 120 * 1000/1 * 3600 = 33.3m/s

u is the initial velocity = 0m/s

a is the acceleration

S is the distance covered = 240m

On substituting the given parameters

33.3² = 0²+2a(240)

33.3² = 480a

1110 = 480a

a = 1110/480

a = 2.3125m/s²

Hence the minimum constant acceleration that the aircraft require to be airborne after a takeoff run of 240 m is 2.3125m/s²

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The butterfly takes a vertical perpendicular path equivalent to 9m and travels a horizontal distance of 17m. The net path between the two is equivalent to that of the hypotenuse, so we will apply the Pythagorean theorem.

x=\sqrt{(9)^2+(0.17)^2}

x = 9.0061 \approx 9.0 m

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3 years ago
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Raindrops hitting the side windows of a car in motion often leave diagonal streaks even if there is no wind. Why? Is the explana
labwork [276]

Answer:

because of the raindrop velocity relative of the car has a vertical and horizontal component  

Explanation:

  1. The car moves in a <em>horizontal direction </em>relative to the ground. The raindrops fall in the <em>vertical direction</em> relative to the ground.
  2. Their velocity relative to the moving car has  both vertical and horizontal components and this is the reason for the diagonal streaks on the side window.
  3. The diagonal streaks on the windshield  arise from a different reason.
  4. The drops  are pushed  off to  one side  of the  windshield  because  of air resistance.

6 0
2 years ago
Ahab has been sent to the shops by his mother. The shops are 1200 m from his
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Answer:

it will take him 200secs to run to the shops

(btw 200 seconds is 3minutes and 20secs)

Explanation:

distance = speed x time

time = distance / speed

1200 ÷ 6 = 200

time = 200seconds

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8 0
3 years ago
In an incline projection the horizontal motion is uniform motion (vx)= constant why?​
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Answer:

it is constant because there is not any force that oppose the horizontal motion

but the vertical velocity is not constant because there is a gravitational force that oppose the motion .

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Two trains, each having a speed of 28 km/h, are headed at each other on the same straight track. A bird that can fly 60 km/h fli
Semenov [28]

Answer:

The value is D =  70.71 \ km

Explanation:

From the question we are told that

The speed of each train is v =  28 \  km/h

The speed of the bird is v_1 =  60 \  km/h

The distance between the trains is d =  66 \  km

Generally the time taken before the collision occurs is mathematically represented as

t =  \frac{d}{2 * v}

=> t =  \frac{66 }{2 *  28}

=> t = 1.18 \  h

The total distance covered by the bird is mathematically represented as

D =  v_1 *  t

=>   D =  60 * 1.18

=>   D =  70.71 \ km

7 0
3 years ago
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