What happens when we push a stone or pebble lying on a surface?
Push a pebble lying on a surface. The pebble moves through a distance. You exerted a force on the pebble and the pebble got displaced. To do this you must apply a force.
How long did it take for the dinosaurs to die after the asteroid?
Scientists have also found very few continuous beds of fossil-bearing rock that cover a time range from several million years before the K–Pg extinction to a few million years after it. The sedimentation rate and thickness of K–Pg clay from three sites suggest rapid extinction, perhaps less than 10,000 years.
What is the equation used to calculate the impact energy from a meteor?
You can determine the kinetic energy the “meteor” will have at the time of impact by using the equation KE = (1/2)mv^2 where KE stands for kinetic energy in Joules, m is the mass of the “meteor” in kilograms, and v is the velocity of the “meteor” in meters per second.
What was formed when you drop the rock to the sand?
Craters are roughly circular, excavated holes made by impact events. The circular shape is due to material flying out in all directions as a result of the explosion upon impact, not a result of the impactor having a circular shape (almost no impactors are spherical).
How big was the asteroid that killed the dinosaurs?
It was tens of miles wide and forever changed history when it crashed into Earth about 66 million years ago. The Chicxulub impactor, as it’s known, was a plummeting asteroid or comet that left behind a crater off the coast of Mexico that spans 93 miles and goes 12 miles deep.
Is there an asteroid on the way April 2020?
On April 29, 2020, around its closest approach to Earth, asteroid (52768) 1998 OR2 will pass close to galaxy NGC 3463 and star HIP 53416.
Is momentum conserved when a ball bounces?
conservation of momentum: The amount of momentum in a system remains the same after a collision. elastic collision: A collision in which all of the momentum is conserved. For example, a ball that bounces back up to its original height. momentum: Mass in motion.
How big of an asteroid would destroy the earth?
about 96 km
Is energy conserved when a ball bounces?
Consider the energy. The total energy is constant between bounces if we neglect air friction. We have the kinetic energy of the ball and the potential energy due to gravity. At the top of the bounce, there is no kinetic energy so all the energy is potential.
Is there a meteor heading our way?
Astronomers have been tracking a large asteroid that has the potential to hit the earth. The asteroid, named Apophis, is about 1100 feet across and was discovered in 2004.
Is there an asteroid coming 2020?
The asteroid passed closest on November 29, 2020, at a safe distance of 11.2 times the Earth-moon distance. The asteroid will return, passing slightly closer on each subsequent flyby – first in November 2040 – and then in November 2093.
How big of a crater would an asteroid made?
Typically, materials from space hit Earth at about 20 kilometers (slightly more than 12 miles) per second. Such a high-speed impact produces a crater that is approximately 20 times larger in diameter than the impacting object.
Why do bouncy balls bounce so high?
Explanation: When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. This is because the higher the starting height of the ball, the higher the ball’s potential energy. An object has potential energy because of its position.
What energy is possessed by fast moving cricket ball?
KINETIC ENERGY
How do you determine crater size?
- Crater depth can be calculated from the shadow length as before.
- Upload the image into HiView and use the measuring tool to.
- count the pixels.
- Use the shadow formula.
- d= tan(90-θ) X L.
- d = tan(90 – 72) x (1899 x 25) cm.
- d = 15425 cm = 154 m.
How does drop height affect crater size?
The higher the drop height, the greater the velocity of the ball. At any given height, the most massive ball will have the greatest effect. The greater an object’s velocity, the larger its impact crater. When dropped from a given height, the greater the mass, the larger the crater.
What affects the size of a crater?
The size and shape of a crater depend on several factors: the mass of the impacting object; the density of the impacting object; the velocity of the impacting object; and.
Why does a rubber ball eventually stop bouncing?
If you drop the basketball, the force of gravity pulls it down, and as the ball falls, its potential energy is converted to kinetic energy. This is because the basketball had an inelastic collision with the ground. After a few bounces, it stops bouncing completely.
Why does a ball bounces after hitting the floor?
Strange as it may seem, a ball bounces off the floor because the floor pushes it up! The ball gains energy of motion, known as kinetic energy. When the ball hits the floor and stops, that energy has to go somewhere. The energy goes into deforming the ball–from its original round shape to a squashed shape.
What form or forms of energy does the ball?
In terms of energy, when a ball is dropped it has gravitational potential energy, GPE to start. At it falls, this is converted into kinetic energy, KE because it speeds up. As it rises after bounching it slows down, losing kinetic energy, and gaining gravitational potential energy.
Can a ball bounce forever?
The law of conservation of energy implies that a bouncing ball will bounce forever. Of course, it does not. When you drop it on the floor, it changes some of its energy into other forms, such as heat, each time it hits the floor.
What has caused the ball to make a deeper dent?
The answer lies in how far the ball has dented inward due to its collision with the floor. As it falls, the ball converts energy stored in the force of gravity—gravitational potential energy—into energy of motion—kinetic energy. By the time it reaches the floor, the ball is traveling quickly and it hits the floor hard.
How does the angle of impact affect the crater size?
In case of large impact craters, collapse of the central peak is more pronounced in the downrange direction. Effect of the impact angle on crater size: Crater size decreases proportional to the sinus of the impact angle α . This decrease is more pronounced for stronger materials.
Where does the energy go when a ball bounces?
As the ball falls, that energy is converted to kinetic energy. When the ball collides with the floor, some of this kinetic energy is transferred to the floor and converted to thermal energy (friction) and elastic potential energy (ball deformation.)
Why do balls eventually stop?
The balls lose energy to many things – they lose energy to the air as they move through it (air friction), they make sound energy when they collide, and they lose energy to heat upon collision. Each of these factors “takes away” energy from the ball – as the ball loses energy it slows down and eventually stops.