sofiarodr sofiarodr

23-07-2017
Physics

contestada

A ball is thrown directly downward with an initial W speed of 8.00 m/s from a height of 30.0 m. After what time interval does it strike the ground?

Respuesta :

froffiek froffiek

23-07-2017

Vf^2=Vi^2+2ad
Vf^2=64+2(9.8)(30)
Vf^2=652
Vf=25.5

Now use Vf=Vi+at

25.5=8+2(9.8)t
solve for t
t=1.789 s

Answer Link

Otras preguntas

The length of a rectangle is two times the width. To express the length and the width in terms of the same variable, let W be the width. Then the length is

If you answer this you are my hero and good things will happen to you. Which is bigger: or 0.78? 6.6 11. If x = 2, calculate the value of: x2 -

The ratio of boys to girls in the gym class at a local middle school is 3:2. what percent of the gym class is girls

nancy billows promised to pay her son$600 quarterly for four years. If nancy can invest her money at 6% in an ordinary annuity, she must invest how much today?

In your reading material indicates that most non-chain small retailers get a discount of _______ A. 15 to 20% B. 25 to 35% C. 40 to 50% D.55 to 65%

Rachel was cutting out some fabric for a friend.she cut a piece that was 5 centimeters wide and had an area of 20 cm².how long was the piece

How many regular triangles meet at a vertex to form a regular tessellation? A. 2 B. 3 C. 4 D. 6

6. A rectangular block of wood has length 6.0 cm, width 5.0 cm and height 10.0 cm. It has mass l50g. What is the mass of a block of the same type of wood of len

one serving of cereal is 32 grams. ella needs 18 servings of cereal for a soccer team breakfast. she wants to buy enough cereal with the least amout left over.

A girl saves 30% of the money she earns each month. she earns $350 each month. how much does she save?