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If a ball falls 30 meters how fast will it be going when it hits the ground?
Wiki User
∙ 14y ago
80 meters A2 The equation that will give you the answer comes from either "conservation of mechanical energy" or from the study of kinematics. If you neglect air resistance the equation is; V = SquareRoot( 2gh) where h = 80 m (given) and g = 9.8 m/ss (acceleration due to gravity). V = SquareRoot( 2 x 9.8 x 80 ) = squareRoot( 1568) = 39.6 m/s Because of air resistance the speed will be a bit slower then 39.6 m/s but there is not enough information given to calculate this.
Wiki User
∙ 14y ago
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Why do balls bounce?
The balls bounce because gravity is what pulls the falling ball towards the ground! As it falls the ball gains energy from its movement
What is the potential energy of the ball in the instant that it is exactly 18.0 meters above the ground?
529.2 J
What type of energy does a ball have at the top of its arc?
The potential energy that gathered as the ball was ascending rapidly converts to kinectic energy as the ball falls downwards, at a rate of 9.801 meters/second squared.
When a ball is thrown straight up by how much does the speed decrease each second neglect air resistance?
Ignoring Air Resistance, on earth near the earths surface gravity applies a force on all bodies. The acceleration the ball will experience is -9.8 meters per second per second (i.e. it will slow the ball down. When the ball then falls to the ground from the apogee of the throw it will continue to accelerate at 9.8 meters per second per second per second and will hit the ground at the same speed it left the ground originally. So each second it will slow by 9.8 meters per second. 9.8 meters per second, (or 32.2 feet per second), if the experiment is carried out on or near the surface of the earth. 1.6 meters (5.25 feet) per second, if it's on or near the surface of the moon. 3.52 meters (11.5 feet) per second, if it's on or near the surface of Mars.
When a 1.5 kg ball hits the ground what is the Potential energy?
PE = m•g•h, where m is mass in kg, g is 9.8m/s2, and h is height above the earth in meters. When the ball hits the ground, it is zero meters above the earth, therefore its PE is zero.
When a lacrosse ball is knocked loose is that called a fumble?
No, when a ball falls onto the ground in a lacrosse game it is referred to as a 'ground ball'.
If you were standing on moon with a ball in your hand and you let go of it the ball would do what?
it falls to the ground
What falls faster a tennis ball or soccer ball?
it would hit the ground if there was one to hit
A ball is thrown horizontally at 20 meters from the top of a cliff 50 meters high How far from the base of the cliff does the ball strike the ground?
64 METERSA+
Can a player running the ball touch the ball to the ground to steady himself without going down?
If the ball touches the ground, the runner is down. This is why 'the ground cannot cause a fumble.'
What is a ground ball in lacrosse?
A ground ball is when a player picks the ball up from the ground. The ball is often dropped and ground ball pickups are a vital skill to have. A ball thrown and intercepted by the opposing team is also considered a ground ball for the person intercepting the pass.
When you hold a ball above ground does it have kinetic energy?
Potential, changing to kinetic when you release it and it falls.
How to calculate the amount of time for a ball to reach 3 meters?
You need to know how fast the ball is going, and divide the speed by the distance, which is 3 meters.
Jose tossed a ball upward in the air after a while the ball falls downwardwhat makes it move fast as it approaches he ground?
Gravitational pull.
Why do balls bounce?
The balls bounce because gravity is what pulls the falling ball towards the ground! As it falls the ball gains energy from its movement
What is the potential energy of the ball in the instant that it is exactly 18.0 meters above the ground?
529.2 J
What falls faster dry tennis ball or a wet tennis ball?
Wet, because in has more weight on it. If a tennis ball is wet it can't bounce it just falls and stays on the ground.
