0
H equals -4.9t2 plus 20t plus 10 How many seconds will it take for the stone to hit the ground h equals 0 after it is thrown in the air?
We have to trust the equation you give us, telling us that the acceleration of gravity is 9.8,
the tossing speed is 20 straight up, and the stone leaves your hand from 10 above
ground.
If all of that is true, then H = -4.9 t2 + 20t + 10, and when the stone hits the ground,
-4.9 t2 + 20t + 10 = 0
Multiply both sides of the equation by -1 :
4.9 t2 - 20t - 10 = 0
We're not going to be able to factor that ugly thing,
so we have to use the quadratic equation:
t = [ 20 +/- sqrt(400 + 196) ] / 9.8 = ( 20 +/- 24.413) / 9.8
I get 4.532 seconds (rounded)
What else can I help you with?
A stone falls from a ledge and takes 8 seconds to hit the ground?
A stone that falls from a ledge and takes 8 second to hit the ground travels a distance of 313.6 meters. You can find this answer by substituting 8 seconds for time in the physics formula d = 1/2 x acceleration x (t squared), where d = distance, acceleration is given as a =9.8 meters/second squared, and t squared is time in seconds.
A stone falls from a ledge and takes 16 seconds to hit the ground the stone has an original velocity of 0 ms how tall is the ledge?
The approximate gravitational acceleration on Earth is 9.8 meters per second. Neglecting air friction is s equals 4.9 times 16 squared. S is equal to 1254.4 meters which is equal to 4100 feet.
If a stone falls past a bird on a ledge moving at 4 meters per second how fast will the stone be moving just before it hits the ground below 9 seconds later?
92.2m/s
If a stone falls past a bird on a ledge moving at 4ms how fast will the stone be moving just before it hits the ground below 9 seconds later?
A 92.2 m/s V = (4 m/s) + (9.8 m/s²) (9 s) V = 92.2 m/s
A stone falls from a ledge and takes 8 seconds to hit the ground the stone has a original velocity of 0 ms how tall is the ledge?
H = 1/2 g T2 = (4.9) (64) = 313.6 meters.H = 1/2g T2 = (4.9) x (8)2 = 4.9 x 64 = 313.6 meters
What is the final velocity of a stone with an original velocity of 0 falling from a ledge that takes 8 seconds to hit the ground?
On Earth gravity equals 9.8 m/s^2. If you multiply that by 8 seconds you get: 78.4m/s
A stone of mass 2 kg is thrown in the downward direction from the roof of the building it reaches the surface of the earth in 2 seconds how long a 4 kg stone will take to reach the earth?
Both stones will take the same time to reach the earth (2 seconds) regardless of their masses, assuming they are both thrown from the same height and under the influence of gravity. The acceleration due to gravity is the same for both stones, so they will fall at the same rate.
What are the lyrics in 9 samurai?
A stone will be thrown at the state. And a stone will be thrown at the churches.
A stone falls freely from rest The total distance covered by it in the last second of its motion equals the distance covered by it in the first three seconds How long does the stone remain in air?
A stone falls freely from rest The total distance covered by it in the last second of its motion equals the distance covered by it in the first three seconds How long does the stone remain in air?
When a stone is thrown up in air it comes down after some time why?
When a stone is thrown up in the air, it rises due to the initial force applied to it. However, gravity pulls the stone back down towards the Earth. As the stone loses its upwards momentum and the pull of gravity becomes stronger, it eventually falls back down to the ground.
What is the passive of who threw the stone?
The stone was thrown by whom.
What weight is a stone?
One stone equals 14 pounds.One stone equals 14 pounds.One stone equals 14 pounds.One stone equals 14 pounds.One stone equals 14 pounds.One stone equals 14 pounds.
Sample projectile motion and falling objects word problems?
a stone is thrown from the top of a building with an initial horizontal velocity of 20 m/s if it is thrown from a height of 30 m and air resistance is neglected, find: a) time it takes the stone to reach the ground b) range
A stone is thrown upward from a roof at the same time as another identical stone is dropped from there What is true of the two stones?
A) the dropped one hits the ground first B) the tossed one hits harder
When will a stone return to the groun if it is thrown upward with an initial velocity of 16ms?
The stone will return to the ground when its vertical velocity becomes zero and it starts to fall back down. The time it takes for this to happen can be calculated using kinematic equations. In this case, the time can be found by setting the vertical velocity to zero and solving for time.
What is 138.8 pounds in stone?
138.8 equals 9st 12.8lb (a stone is 14lbs.)138.8 equals 9st 12.8lb (a stone is 14lbs.)138.8 equals 9st 12.8lb (a stone is 14lbs.)138.8 equals 9st 12.8lb (a stone is 14lbs.)138.8 equals 9st 12.8lb (a stone is 14lbs.)138.8 equals 9st 12.8lb (a stone is 14lbs.)
A stone falls from a ledge and takes 8 seconds to hit the ground?
A stone that falls from a ledge and takes 8 second to hit the ground travels a distance of 313.6 meters. You can find this answer by substituting 8 seconds for time in the physics formula d = 1/2 x acceleration x (t squared), where d = distance, acceleration is given as a =9.8 meters/second squared, and t squared is time in seconds.
