Let v be the velocity when the ball is at 640 feets going downwards
v = 48 feet /sec
let the velocity with which it reaches the ground be u
then,
u2=v2+2gh
g = acc due t ogravity in feet/sq.sec
h = 640 feet
the time taken to reach the ground
= time to return to 640ft + the time to fall from there Time taken to get to the ground is 8 seconds. Final velocity is 208 feet per second downwards
26.7 seconds
240 ft
The three second rule is a rule that says: You have 3 seconds to pick up food that is dropped to the ground before it is considered to have gone bad. There are many factors involved that can change the rule, for example the type of food dropped (sticky or not), the condition of the ground (dirty or clean), and who is watching (the people who will eat the food or you are all alone).
If the ball was dropped from a roof and hit the ground 3.03 seconds later, then when it hit the groundits velocity was 29.694 meters (97.42 feet) per second (rounded) downward.
They should reach the ground together, since their initial vertical speed is the same, namely zero.
26.7 seconds
Dropped objects fall at the same rate due to gravity accelerating them all at 9.8 m/s^2 regardless of their mass. This is described by the principle of equivalence and is a fundamental aspect of physics known as the equivalence principle.
240 ft
593 meters.
The three second rule is a rule that says: You have 3 seconds to pick up food that is dropped to the ground before it is considered to have gone bad. There are many factors involved that can change the rule, for example the type of food dropped (sticky or not), the condition of the ground (dirty or clean), and who is watching (the people who will eat the food or you are all alone).
the second bomb was dropped on Nagasaki
Germs can transfer to food within seconds of being dropped on the ground. The risk of contamination depends on factors such as the cleanliness of the surface, the type of food, and how long it stays on the ground. It is generally recommended to follow the 5-second rule — if food is picked up quickly, the risk of contamination is lower.
There was only 1 balloon which was Felix the Cat.
The second bomb was called Little Boy and it was dropped on Nagasaki.
What do you mean, "leader"? Harry Truman was president of the US when both the first and second atomic bombs were dropped. The commander of the aircraft the "second" bomb (actually the third detonated, but the second to be "dropped" since the first was a test explosion and was not dropped but rather mounted on a tower) was dropped from was Major Charles W. Sweeney.
To calculate the velocity of the ball, we need to know the height from which it was dropped. If the ball was dropped from rest, we can use the formula for free fall motion: velocity = (acceleration due to gravity * time). Assuming the acceleration due to gravity is 9.81 m/s^2, the velocity of the ball hitting the ground after 3.03 seconds would be around 29.7 m/s.
Ignoring air resistance, the acceleration is constant, from the moment the ballleaves the hand until the moment it hits the ground, regardless of the mass ofthe ball or the height from which it's released.It's 9.8 meters (32.2 feet) per second2 . That's the acceleration of gravity. (On Earth.)The speed of a dropped object grows continuously. At the end of 1 second,it's 9.8 meters (32.2 feet) per second.