1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Serga [27]
3 years ago
14

You are standing in a street corner. And egg falls and splats on the street. Being an expert in egg disintegration you estimate

it was traveling 22 m/s when it hit. You assume the egg was dropped. From what height was it dropped
Physics
1 answer:
Alex787 [66]3 years ago
8 0

The egg was dropped from a height of 24.7 m (free fall motion)

Explanation:

The motion of the egg is a free fall motion (uniformly accelerated motion), so we can use the following suvat equation:

v^2-u^2=2as

where

v is the final velocity

u is the initial velocity

a is the acceleration

s is the displacement

For the egg in this problem, we have:

u = 0 is the initial velocity

v = 22 m/s is the final velocity

a=g=9.8 m/s^2 is the acceleration of gravity

s is the vertical displacement (the height from which the egg was dropped)

Solving for s, we find:

s=\frac{v^2-u^2}{2a}=\frac{22^2-0}{2(9.8)}=24.7 m

Learn more about free fall here:

brainly.com/question/1748290

brainly.com/question/11042118

brainly.com/question/2455974

brainly.com/question/2607086

#LearnwithBrainly

You might be interested in
A quarterback is set up to throw the football to a receiver who is running with a constant velocity v⃗ rv→rv_r_vec directly away
Artist 52 [7]

Answer:

a) V_o,y = 0.5*g*t_c

b) V_o,x = D/t_c - v_r

c) V_o = sqrt ( (D/t_c - v_r)^2 + (0.5*g*t_c)^2)

d)  Q = arctan ( g*t_c^2 / 2*(D - v_r*t_c) )

Explanation:

Given:

- The velocity of quarterback before the throw = v_r

- The initial distance of receiver = r

- The final distance of receiver = D

- The time taken to catch the throw = t_c

- x(0) = y(0) = 0

Find:

a) Find V_o,y, the vertical component of the velocity of the ball when the quarterback releases it.  Express V_o,y in terms of t_c and g.

b) Find V_o,x, the initial horizontal component of velocity of the ball.   Express your answer for V_o,x in terms of D, t_c, and v_r.

c) Find the speed V_o with which the quarterback must throw the ball.  

   Answer in terms of D, t_c, v_r, and g.

d) Assuming that the quarterback throws the ball with speed V_o, find the angle Q above the horizontal at which he should throw it.

Solution:

- The vertical component of velocity V_o,y can be calculated using second kinematics equation of motion:

                               y = y(0) + V_o,y*t_c - 0.5*g*t_c^2

                              0 = 0 + V_o,y*t_c - 0.5*g*t_c^2

                               V_o,y = 0.5*g*t_c

- The horizontal component of velocity V_o,x witch which velocity is thrown can be calculated using second kinematics equation of motion:

- We know that V_i, x = V_o,x + v_r. Hence,

                               x = x(0) + V_i,x*t_c

                               D = 0 + V_i,x*t_c

                               V_o,x + v_r = D/t_c

                                V_o,x = D/t_c - v_r

- The speed with which the ball was thrown can be evaluated by finding the resultant of V_o,x and V_o,y components of velocity as follows:

                           V_o = sqrt ( V_o,x^2 + V_o,y^2)

                          V_o = sqrt ( (D/t_c - v_r)^2 + (0.5*g*t_c)^2)

       

- The angle with which it should be thrown can be evaluated by trigonometric relation:

                            tan(Q) = ( V_o,y / V_o,x )

                            tan(Q) = ( (0.5*g*t_c)/ (D/t_c - v_r) )

                                   Q = arctan ( g*t_c^2 / 2*(D - v_r*t_c) )

                           

                               

6 0
3 years ago
Help!!! I need it today <br> Thank you in advance
svlad2 [7]

Answer:

 F = - k (x-xo) a graph of the weight or applied force against the elongation obtaining a line already proves Hooke's law.

Explanation:

The student wants to prove hooke's law which has the form

          F = - k (x-xo)

To do this we hang the spring in a vertical position and mark the equilibrium position on a tape measure, to simplify the calculations we can make this point zero by placing our reference system in this position.

Now for a series of known masses let's get them one by one and measure the spring elongation, building a table of weight vs elongation,

we must be careful when hanging the weights so as not to create oscillations in the spring

we look for the mass of each weight

         W = mg

          m = W / g

and we write them in a new column, we make a graph of the weight or applied force against the elongation and it should give a straight line; the slope of this line is sought, which is the spring constant.

The fact of obtaining a line already proves Hooke's law.

5 0
3 years ago
A cannonball is shot up in the air with a vertical speed of 24 miles what is the cannon balls vertical speed just before it hits
meriva

Answer:

I think it will back towards the earth because earth gravitional field will attract to Wards

8 0
3 years ago
Dependent variable is the _______ that happens because of the UI independent variable. (No answer choices provided)
Damm [24]

Answer: One is called the dependent variable and the other the independent variable. The independent variable is the variable the experimenter changes or controls and is assumed to have a direct effect on the dependent variable.

4 0
3 years ago
Can someone help me with accerleration
dangina [55]

Answer:

acceleration is the rate of change of the velocity of an object with respect to time. Accelerations are vector quantities. The orientation of an object's acceleration is given by the orientation of the net force acting on that object.

SI unit: m/s2, m·s−2, m s−2

6 0
3 years ago
Read 2 more answers
Other questions:
  • Suppose you go outside and look at three stars. Star A is blue, star B is white, and star C is red. Which star is the hottest, a
    5·2 answers
  • Inertia ____.
    6·1 answer
  • What unit messures amplitude?
    8·1 answer
  • What is the internal resistance of an automobile battery that has an emf of 12.0 V and a terminal voltage of 18.4 V while a curr
    14·1 answer
  • How long does it take an automobile traveling 66.7 km/h to become even with a car that is traveling in another lane at 52.7 km/h
    8·1 answer
  • A pendulum with a period of 1 s on earth where the acceleration
    11·1 answer
  • Three charges are arranged as shown in the picture above. Find the magnitude and direction of the electrostatic force on the 6 n
    10·1 answer
  • How long will it take for a body
    8·1 answer
  • After going through the hoop, a basketball falls to the floor 3 meters below the hoop. The ball
    14·1 answer
  • Which best describes a wave?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!