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Sergeeva-Olga [200]
3 years ago
10

7

Physics
1 answer:
Arlecino [84]3 years ago
4 0

Answer:

3.844 x 10 to the 5th power

Explanation:

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A rare butterfly (0.01 kg) is slowly flapping its wings and moving across a road. An unsuspecting driver in a large car (1000 kg
aliya0001 [1]

Both the butterfly and the large car will have equal forces but in opposite direction.

<h3>Newton's third law of motion</h3>

Newton's third law of motion states that action and reaction are equal and opposite. That is, the force exerted on an object is equal to the reaction experienced by the object.

Fa = - Fb

where;

  • Fa is the force exerted by the large car
  • Fb is the force of the butterfly

Thus, both the butterfly and the large car will have equal forces but in opposite direction.

Learn more about Newton's third law of motion here: brainly.com/question/25998091

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8 0
2 years ago
A boat moving at 7.8 km/hr relative to the water is crossing a river 3.5 km wide in which the current is flowing at 2.8 km/hr. A
Free_Kalibri [48]

Answer:\theta =21.03^{\circ}

Explanation:

Given

velocity of boat with respect to river =7.8 km/hr

velocity of river is 2.8 km/hr

River is 3.5 km wide

Suppose boat leaves at an angle of \theta  with vertical such that it reaches exactly opposite end of initial Point

Therefore

7.8\sin \thetacomponent will balance the river Flowso that sin component helps to cross the river

7.8\sin \theta =2.8

\sin \theta =0.3589

\theta =sin^{-1}(0.3589)

\theta =21.03^{\circ}

8 0
3 years ago
What is the force required to propel an object with mass of 12.0 kg at a rate of 27.0 m/s^2
enyata [817]

Newtons second law --> F = ma

So we have mass which = 12.0

And acceleration = 27.0

So the force = (12)(27)

F = 324 N

4 0
3 years ago
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ListenA bicycle and its rider have a combined mass of 80. kilograms and a speed of 6.0 meters per second. What is the magnitude
Setler [38]

Answer:

a) 1.2\times 10^2\ N

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

a = Acceleration

v=u+at\\\Rightarrow a=\frac{v-u}{t}\\\Rightarrow a=\frac{0-6}{4}\\\Rightarrow a=-1.5\ m/s^2

The acceleration of the bicycle and rider is -1.5 m/s²

Force

F=ma\\\Rightarrow F=80\times -1.5\\\Rightarrow F=-120\ N=-1.2\times 10^2\ N

The magnitude of the average force needed to bring the bicycle and its rider to a stop is 1.2\times 10^2\ N

3 0
3 years ago
What is the difference between the velocity and the speed of an object?
Alina [70]
Speed is the distance traveled by an object where as, velocity is distance traveled by an object per unit time in a particular direction. Speed is a scalar quantity where as velocity is a vector quantity.
7 0
3 years ago
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