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
Ad libitum [116K]
3 years ago
13

A ball rolls over the edge of a platform with only a horizontal velocity. The height of the platform is 1.6 m and the horizontal

range of the ball from the base of the platform is 20 m. What is the horizontal velocity of the ball just before it touches the ground? Neglect air resistance. Use g = -9.8 m/s2.
Mathematics
1 answer:
Sever21 [200]3 years ago
4 0

Answer:

35 m/s

Step-by-step explanation:

Let gravitational acceleration g = 9.8m/s2. We can calculate the amount of time for the ball to fall vertically a distance of 1.6 m

1.6 = 9.8t^2/2

t^2 = 2*1.6/9.8 = 0.327

t = \sqrt{0.327} = 0.571s

This is also the time it takes for the ball to fly horizontally, assume constant horizontal speed, we can calculate the speed it takes to travel across 20m in 0.571s

v = 20 / 0.571 = 35 m/s

You might be interested in
I need help asap! 25 points
alukav5142 [94]

Answer:bc thats not the number included in the problem

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
The distance on a map between a student’s house and her job is 6 cm. On the same map, the distance between her house and her sch
Liula [17]

Answer:it B I think

Step-by-step explanation:

I’m not sure though.

3 0
2 years ago
Read 2 more answers
Write 1.04 x 10^2 in standard form
Natasha2012 [34]
<span> 1.04 x 10^2 in standard form = 104

----------------</span>
7 0
2 years ago
Read 2 more answers
If you drove 60 miles in two hours, how many miles per hour did you drive?<br><br> 30 miles per hour
soldi70 [24.7K]

Answer:

30 mph

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Find the slope of the line through the pair of points. (1, 2) and (6, 9)
jekas [21]

Answer:

7/5

Step-by-step explanation:

To find the slope, we can use the slope formula

m = (y2-y1)/(x2-x1)

   = ( 9-2)/(6-1)

    = 7/5

7 0
3 years ago
Read 2 more answers
Other questions:
  • Liza gets paid $5.50 an hour to babysit her little cousins. Last weekend, she watched them for three hours on Friday, nine hours
    10·2 answers
  • Factors of 48 that add to equal 26
    6·1 answer
  • Can someone plz help me thank you
    9·1 answer
  • Find the circumference of a circle with radius, r = 19.5m.<br> Give your answer in terms of pie
    7·1 answer
  • Find the domain and range of the equation:<br><br>b(x)=|x-3|​
    13·1 answer
  • Bag A: Two thirds of the candies are yellow. What portion of the candies is green
    11·1 answer
  • 7 less than 5 times f is 18
    12·2 answers
  • Find the length of STV in the figure.
    9·1 answer
  • GUYS Can you pls HElp me Ill GIve Brianliest to whoever has the right answer
    15·2 answers
  • Find the mid-point of the line segment joining the points (10, 13) and (-7, 7)? ​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!