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3 years ago

7. What is an unbalanced force?

Physics

1 answer:

Step2247 [10]3 years ago

8 0

Answer:

b . force that are unequal in size but in same direction.

Hope this will help . :)

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A seismic wave is energy released as the result of rock movement along a fault. T/F

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Answer:

TRUE

Explanation:

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3 years ago

The table below shows the average wind speeds of four hurricanes in Florida

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Hurricane A. This is because the wind speed of this hurricane is greater than the other hurricanes. The more wind there is in a hurricane the more land and home destruction it’s likely to cause. Hope this helps. :)

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3 years ago

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The figure below is a graph of net force vs. the acceleration of an object. Use a graph to determine the mass of the object.

kotegsom [21]

Answer:scattered plot

Explanation:

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3 years ago

Light travels at 300,000 km per second. Mars is 56 million km away from Earth. How many seconds does it take light to travel fro

alina1380 [7]

Answer:

 It takes 186.67 second for the light to travel from Mars to earth.

Explanation:

Light: Light is a visible form of energy which is radiated outward from a source. Light travels in a straight line, and this phenomenon is called rectilinear propagation of light.

S = d/t .......................... Equation 1

making t the subject of the equation

t = d/S ......................... Equation 2

Where S = speed of light, d = distance between the earth and Mars, t = time

Given: d = 56000000 km, S = 300000 km per seconds.

Substituting these values into equation 2

t = 56000000/300000

t = 186.67 seconds.

Thus it takes 186.67 second for the light to travel from Mars to earth.

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3 years ago

A 1 170.0 kg car traveling initially with a speed of 25.000 m/s in an easterly direction crashes into the back of a 9 800.0 kg t

Stella [2.4K]

Answer:

Explanation:

mass of car, m1 = 1170 kg

mass of truck, m2 = 9800 kg

initial velocity of car, u1 = 25 m/s

initial velocity of truck, u2 = 20 m/s

final velocity of car, v1 = 18 m/s

Let the final velocity of truck is v2.

(a) Use the conservation of momentum

m1 x u1 + m2 x u2 + m1 x v1 + m2 x v2

1170 x 25 + 9800 x 20 = 1170 x 18 + 9800 x v2

29250 + 196000 = 21060 + 9800 v2

v2 = 20.84 m/s

(b) Total kinetic energy before collision,

Ki = 0.5 x 1170 x 25 x 25 + 0.5 x 9800 x 20 x 20

Ki = 365625 + 1960000 = 2325625 J

Total final kinetic energy

Kf = 0.5 x 1170 x 18 x 18 + 0.5 x 9800 x 20.84 x 20.84

Kf = 189540 + 2128097.44

Kf = 2317637.44 J

Change in energy = 2325625 - 2317637.44 = 7987.56 J

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4 years ago

7. ​What is an unbalanced force?

7. What is an unbalanced force?