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dybincka [34]
3 years ago
10

A student solving a physics problem for the range of a projectile has obtained the expression

Physics
1 answer:
Alika [10]3 years ago
6 0

Answer:

The range of the projectile is 66.7 meters.

Explanation:

The range of a projectile is given by the following expression as :

R=\dfrac{v_o^2\ sin2\theta}{g}..............(1)

v_o=37.2\ m/s

\theta=14.1^{\circ}

g=9.8\ m/s^2

The range can be calculated using equation (1). Putting the values of all parameters we get :

R=\dfrac{(37.2)^2\ sin2(14.1)}{9.8}

R = 66.7 meters

So, the range of the projectile is 66.7 meters. Hence, this is the required solution.

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find the pressure exerted by a force of 8000 newtons on an area of 25m square..give your answer in Newtown/m2​
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Pressure = 320 N/m²

Explanation:

Given the following data;

Force = 8000 Newton

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Which scientist was the first to propose the heliocentric model of the universe? A. Aristotle B. Isaac Newton C. Galileo Galilei
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A vehicle starts from rest and accelerates uniformly for 12 seconds to a
xz_007 [3.2K]

The value of the acceleration is 0.76 m/s² and the total time taken by the vehicle is 39 seconds.

<h3>Acceleration of the vehicle</h3>

The acceleration of the vehicle before coming to rest is calculated as follows;

v² = u² + 2as

where;

  • v is the final velocity
  • u is the initial velocity
  • a is the acceleration
  • s is the distance traveled before stopping

the car came to rest with constant velocity attained after 12 seconds.

the initial velocity of the car before 12 seconds is zero.

v² = 0 + 2as

a = v²/2s

a = (10²)/(2 x 66)

a = 0.76 m/s²

<h3>Time of motion of the vehicle</h3>

d = ut + ¹/₂at²

where;

  • d is the total distance traveled
  • t is the time of motion
  • a is acceleration
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580 = 0 + ¹/₂(0.76)t²

580 = 0.38t²

t² = 580/0.38

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t = √1,526.3

t = 39 seconds

Thus, the value of the acceleration is 0.76 m/s² and the total time taken by the vehicle is 39 seconds.

Learn more about time of motion here: brainly.com/question/2364404

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