An object falls freely from a height of 25 meters onto the root of building 5meters High. Calculate the velocity which the object strikes the root

19.8m/s or 14√2 m/s

Explanation:

To find how fast something is going when it strikes the roof, we can use the equation √(2*g*height) where g=9.8 m/s^2 and the height is 20 meters as 25-5=20.

Substituting in we get:

or

the first american roller coaster was the mauch chunk switchback railway, built in the mountains of pennsylvania in the mid-1800s. the track, originally built to send coal to a railway, was reconfigured as a "scenic tour."

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop