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
taurus [48]
3 years ago
8

how long will it take a shelf fired from a cliff at an initial velocity of 800 metres per second at an angle of 30 degree below

the horizontal to reach the ground 150 metre belowJason control rules of baseball with the horizontal component of velocity of 25 metres per second ​
Mathematics
1 answer:
Zina [86]3 years ago
6 0

0.373 seconds. First, calculate the initial vertical velocity of the shell. 800sin(30) = 800*0.5 = 400 m/s Now the formula for the distance traveled is d = 400 m/s * T + 0.5A T^2 Substituting known values gives. 150 = 400 m/s * T + 0.5*9.80m/s^2 T^2 150 = 400 m/s * T + 4.9 m/s^2 T^2 Arrange as a quadratic formula 0 = 400 m/s * T + 4.9 m/s^2 T^2 - 150 4.9 m/s^2 T^2 + 400 m/s * T - 150 = 0 Now solve for T using the quadratic formula with a=4.9, b=400, and c=-150 The calculated value is 0.373 seconds. Is this value reasonable? Let's check. The initial downward velocity is 400 m/s. So 150/400 = 0.375 seconds. Since the actual time will be a bit less due to acceleration by gravity and since the total time is so short, there won't be much acceleration due to gravity, the value of 0.373 is quite reasonable.

You might be interested in
Can anyone help me ? I just need the numbers
Nimfa-mama [501]

Answer:

<em>(-6, 0) and  (0, 1.5)</em>

<em></em>

Step-by-step explanation:

The equation of the line in pint slope form is expressed as;

y-y0= m(x-x0)

m is the slope

(x0, y0) is the point on the line

Given

m = 1/4

(x0, y0) = (6,3)

Substitute into the formula;

y - 3 =  1/4(x-6)

4(y-3) = x - 6

4y - 12 = x-6

4y - x = -6+12

4y - x = 6

x = 4y - 6

To get the points to plot, we will find the x and y-intercept of the resulting expression.

For the x-intercept,

at y = 0

x = 4(0) - 6

x = -6

Hence the x-intercept is at (-6, 0)

For the y-intercept,

at x = 0

0 = 4y - 6

4y = 6

y = 6/4

y = 3/2

y = 1.5

Hence the y-intercept is at (0, 1.5)

<em>Hence the required points to plot to get the required line are  (-6, 0) and  (0, 1.5)</em>

<em></em>

7 0
3 years ago
Find x using the ratio of the sides 12 cm and 16cm​
Marysya12 [62]

Answer:

the ratio of the following x is 3/4

5 0
2 years ago
A taxi service charges a flat fee of $1.25 and $0.75 per mile. If Henri has $14.00, which of the following shows the number of m
madam [21]

Answer:

Step-by-step explanation:

17 x 0.75 =12.75

12.75 + 1.25= 14

3 0
3 years ago
what is the realtionship between the value of the digital 4 in the numbers 5,412 and the number 54,123?
REY [17]
Times 10 400 times ten is 4000
6 0
2 years ago
Read 2 more answers
The United States Census collects data on many variables about individuals and households.
Mrrafil [7]

Answer:

Years living in the U.S.

How many adults are registered to vote in the upcoming election?

Number of adults over 18

Number of minors in the household

Number of family members residing at the address

Zip code

Step-by-step explanation:

Given the following :

Select the variables which are quantitative :

Quantitative variables may be explained as those variables which are represented numerically or possess numerical attributes. The are usually expressed in numbers. Quantitative variables in the options below are those which will take Numeric inputs.

Years living in the U.S. = quantitative

How many adults are registered to vote in the upcoming election? = quantitative

Number of adults over 18. = quantitative

Number of minors in the household = quantitative

Family role of respondent = not quantitative

Number of family members residing at the address = quantitative

Ethnicity = Not quantitative

Zip code = quantitative

6 0
3 years ago
Other questions:
  • What is the value of the digit 5 in the number 4.105
    10·2 answers
  • Which decimal is greater than 7.26 and less than 7.27 ?
    14·2 answers
  • I need help I legit don't understand please<br>​
    8·1 answer
  • The area of a square is given by the expression square inches. Find an expression that represents the length of one side of the
    14·1 answer
  • I need help on these what is 5=g-8
    9·1 answer
  • A set of history exam scores are normally distributed with a mean of 83.2 points and a standard deviation
    12·1 answer
  • Cory earns $20 per day plus $6 for every
    12·1 answer
  • -3/10x-5/12 20 characters so. ABCDEFGHIJKLMNOPQRSTUVWXYZ
    15·2 answers
  • ​m = 3 and the line goes through the point (2,4)
    15·2 answers
  • TESThttps://student.masteryconnect.com/?iv=Alxn09azl_cyvZFNImj3pQ&amp;tok=2HnpaghCCDpi_smhDxaUY_5r_rqPkPaA3n_nZbF4QeQC2G59l3eC-D
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!