The answer depends on whether the ball is thrown vertically upwards or downwards. That critical piece of information is not provided!
Acceleration is a change in speed, measured per second and so would be meters per second per second or meters per second squared.
Feet per second x 0.3048 = meters per second.
Multiply by time
15 mph = 6.7 meters per second.
55 mph = 24.59 meters per second.
Burj Khalifa in Dubai, UAE is the highest building in the world at 828 meters. The Makkah Royal Clock Tower Hotel in Mecca, Saudi Arabia is now the second largest building in the world at 601 meters. A difference of 227 meters.
He will not make it.
42
I assume you hit it up from the ground level as well. From Conservation of Energy, it immediately follows that: * If there is no air resistance, when it hits the ground it will, once again, have a speed of 100 meters per second. * Since under usual circumstances there WILL BE air resistance, its speed will be less than 100 meters per second.
They should reach the ground together, since their initial vertical speed is the same, namely zero.
The acceleration of a projectile fired vertically down is equal to the acceleration due to gravity, which is -9.81 m/s^2. The negative sign indicates that the acceleration is in the downward direction.
20 meters per second
A projectile fired directly upwards has no positive velocity. Its only velocity is attributed to the force of gravity, which is -9.8 meters per second squared.
After one second the rock will be traveling at 9.8m/s (meters per second) or 32.17 feet per second. The height of the building is irrevelant, because gravity always pulls with the same force of 9.8m/s2 (meters per second squared), which means that every second the velocity will increase by 9.8m/s. This is why after one second the rock will be going 9.8m/s.
The London "cucumber building" is about half the height of the Empire State Building. It has 40 stories and a height of about 180 meters, compared to 102 floors and 373 meters for the occupied portion of the New York City skyscaper (the second tallest in the US).
The London "cucumber building" is about half the height of the Empire State Building. It has 40 stories and a height of about 180 meters, compared to 102 floors and 373 meters for the occupied portion of the New York City skyscaper (the second tallest in the US).
There are 1000 meters/second in 1 kilo meters/second