0
If i throw a ball downward from a window at a speed of 2.5 ms How fast will it be moving when it hits the sidewalk 3.0 m below?
Wiki User
∙ 15y ago
This would be the simple answer, ignoring air resistance, wind, and other such incooperative forces.
First working out the vertical component of velocity when it hits the floor:
final velocity (v) = ?
Initial velocity (u) = 0
Displacement (s) = 3
Accelleration (a) = g; taken to be 9.81
Using the equationof linear motion v2 = u2 + 2as
v2 = 0 + (2 * 9.81 * 3)
v2 = 58.86
v = 7.672
Now we know that the horizontal component of velocity will be 2.5 ms-1 (ignoring air resistance) so now we have to find out the velocity of the ball when it hits the floor, if it is travelling at a velocity with a downwards vertical component of 7.672ms-1 and a horizontal component of 2.5ms-1
2.52 + 7.6722 = 65.1095
Square rooting that...
Velocity = 8.069ms-1
Wiki User
∙ 15y ago
Add your answer:
Earn +20 pts
What is downward displacement of air?
Downward displacement of air happens when you fill the upper part of a pressure chamber with steam. This causes the denser air below to move downward.
What do you think may happen to leading edge of plate a as it continues to downward?
As the leading edge in forced down it is heated up and becomes part of the molten magma below.
Can portable baseboard heaters be close to theWALL?
Yes they work great when they are below a window because of the cold air infiltration.
What is a downward flowing air current?
A current of air with its velocity directed downwards or in a direction below the horizontal. Mathematically v.n < 0 where v is the velocity vector and n is the upward normal at the surface.
Can it rain below freezing?
Moving water cannot be below freezing, because if it was at its freezing point or below that, it wouldn't be water anymore. It would be ice, and ice is not water, but frozen water.
Should your sidewalk be higher than the lawn?
Yes, it should be. If the sidewalk is not higher than the lawn water will collect on top of the sidewalk when it rains. If the temperature drops below freezing the sidewalk could crack.
Heating the air below a paper bag causes the bag to move upward or downward?
downward
What is downward displacement of air?
Downward displacement of air happens when you fill the upper part of a pressure chamber with steam. This causes the denser air below to move downward.
How do you get into the window on wimpy island?
put the trash can below the window
How do you get past the geysers on Astro Knights Island?
Jump to each rock on the lava geysers when it is below you (even though you may not see it). When you jump from the 5th to the 6th, jump when both of them are moving downward, so that the platform falls right under you.
What tactics does Tom try in Contents of a Dead Man's Pockets to get out of trouble?
Tom tries shouting for help, banging on the window, and waving a letter out the window to get the attention of people walking below his apartment.
The ureter extends downward?
Behind the parietal peritoneum and joins the urinary bladder from below/underneath it.
If the air moves faster below an object does pressure push the object upward or downward?
upward
What is below the menu bar in a window?
the tool bar
What are the reasons for moving the tectonic plates?
They are floating on the magma below them and the magma itself is moving.
When the weight of an area of earth's crust decreases what does the lithosphere do?
It will rise as the asthenosphere below it thickens from the reduction of downward pressure.
How do you beat the lava rocks on Astro Knights Island?
On the Fire Planet, jump from rock to rock as they are lifted and dropped by the geysers. Jump when the next rock is below you, even when you can't see it. For the 6th rock, jump when both rocks are moving downward.(You will land on the rock as it falls under you.)
