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
Daniel [21]
3 years ago
10

4 football is kicked with a speed of 18.0 m/s at an angle of 36.9to the horizontal. 8. How long is the football in the air? Negl

ect air resistance. A ) 1.1 s B C ) 2.2 D) 3.3 E) 4.0
Mathematics
1 answer:
SOVA2 [1]3 years ago
7 0

9514 1404 393

Answer:

  C)  2.2 seconds

Step-by-step explanation:

The initial vertical speed of the football is ...

  v = (18.0 m/s)sin(36.9°) ≈ 10.807 m/s

Since the ball starts and ends at ground level, its speed when it hits the ground is the same as its launch speed. That is, the acceleration due to gravity causes the velocity to change from +v to -v. The time required to do that is ...

  t = 2v/g = 2(10.807 m/s)/(9.8 m/s^2) = 21.614/9.8 s ≈ 2.206 s

The football is in the air about 2.2 seconds.

You might be interested in
In December 1990, the largest pizza ever baked was made in South Africa. The diameter of the pizza was 37.4 meters. What was the
madreJ [45]

Answer:

1098.0266 square meters.

Step-by-step explanation:

Area of a circle is pi times radius squared. We know the diameter, witch is twice the radius. Usually we use 3.14 as pi, but it can also be 22/7. If you have to show your work, try looking for if it asks for pi in the decimal or fraction form. Can I get brainliest?

8 0
3 years ago
Cathy borrows $3280 at 0.3% simple interest per month. When Cathy pays the loan back 9 years later what is the total amount that
Afina-wow [57]

Answer: Simple interest= Principal× rate× time/ 100

                                  Amount= Simple interest + Principal

Step-by-step explanation:

4 0
3 years ago
And slope of the linear equation y+8=3(x−5)<br> ?
Triss [41]

Answer:

slope:  3; vertex:  (5, -8)

Step-by-step explanation:

Compare the given y+8=3(x−5) to the slope-vertex form y - k = m(x - h).  We see that the slope, m, must be 3 and the vertex must be (h, k):  (5, -8).

7 0
2 years ago
Please Help!!!!!!! Meryl spends a total of $68.82 for 2 pairs of sneakers
timama [110]
2x+3-5.32=68.82

2x= 71.14

x=35.57

each sneaker costs $35.57
3 0
3 years ago
Read 2 more answers
Show how you got the answer
rewona [7]
Subtract the 45 minutes they were eating from 1:45pm since that’s when they arrived. You now have 1:00pm, you now just need to find out how long it is from 10:20 am to 1:00pm. HINT: it’s 2h 40m
5 0
2 years ago
Other questions:
  • If the sales tax rate is 9.25% in California, then how much would you pay in Los Angeles for a pair of shoes that cost $39.94
    15·2 answers
  • Brainly.com
    9·2 answers
  • Which number is irrational? <br> A: 0.277277277...<br> B:0.333...<br> C:pie<br> D:0.7
    6·1 answer
  • -0.2x^2+0.9x+0.6=y<br>What's the vertex form for this equation?​
    7·1 answer
  • Matthew was 1200 yards when Lowe began his pursuit. If Lowe ran 3 times as fast as Matthew, and overtook him in 30 minutes, how
    6·1 answer
  • Can someone help me find x
    11·1 answer
  • Factor each expression.<br> 8.) 8 + 16=
    6·2 answers
  • One plane take of at 8:09P.M. And lands at 10:53PM. Another plane takes off at 9:14P.M. And lands at 12:31P.M. For how long were
    11·1 answer
  • Help please!please ASAP
    5·2 answers
  • Can I get a bit of help
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!