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svetoff [14.1K]
3 years ago
15

Help i hope this actually works

Physics
1 answer:
KIM [24]3 years ago
6 0

Answer:

it does tbh.

Explanation:

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A 1100 kg racing car accelerates from rest at a constant rate and covers a distance of 50 m in 5 s. what is the car's accelerati
allsm [11]

The car's acceleration, given the data from the question is 4 m/s²

<h3>Data obtained from the question</h3>

The following data were obtained from the question:

  • Initial velocity (u) = 13 m/s
  • Distance (s) = 50 m
  • Time (t) = 5 s
  • Acceleration (a) = 9.8

<h3>How to determine the acceleration of the car</h3>

The acceleration of the car can be obtained as illustrated below:

s = ut + ½at²

50 = (0 × 5) + (½ × a × 5²)

50 = 0 + (½ × a × 25)

50 = 0 + 12.5a

50 = 12.5a

Divide both sides by 12.5

a = 50 /12.5

a = 4 m/s²

Thus, the acceleration of the car is 4 m/s²

Learn more about acceleration:

brainly.com/question/491732

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1 year ago
These has two questions, any help would be much appreciated. Ignore the current answers.
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3 years ago
A brick 25cm long ,9cm wide 5cm thick has a mass of 1000g determine the greatest pressure that can be exerted by the brick on a
lana66690 [7]

Answer:

<em>The greatest pressure is 2178 Pa</em>

Explanation:

<u>Pressure</u>

It's the force applied perpendicular to the surface of an object per unit area over which the force is distributed.

If F is the force applied and A is the surface area, the pressure is calculated as:

\displaystyle P=\frac{F}{A}

The brick has dimensions of 25 cm by 9 cm by 5 cm. There are three possible areas of contact:

A_1=25*9 = 225 cm^2=0.0225\ m^2

A_2=25*5= 125 cm^2=0.0125\ m^2

A_3=9*5= 45 cm^2=0.0045\ m^2

The  brick has a mass of m=1000 g = 1 Kg and exerts a force equal to its weight when placed on a flat surface, thus:

F = m.g = 1 * 9.8 = 9.8 N

The greatest possible pressure will occur when the area is the least possible (0.0045\ m^2), since the pressure and the area are inversely proportional, thus:

\displaystyle P_{max}=\frac{9.8}{0.0045}

\displaystyle P_{max}=2178 \ Pa

The greatest pressure is 2178 Pa

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