# Why does a ball bounce back up?

Home › Uncategorized › Why does a ball bounce back up? The force of the ball hitting the hard ground puts an equal force back onto the ball, meaning it bounces back up. This happens because balls are made out of an elastic material which allows them to be squashed or stretched and then return to their original shape.

## Why do balls bounce higher on concrete?

When a basketball bounces off of a surface, some of its energy is absorbed by that surface. A hard surface, such as concrete, absorbs less energy compared with a soft surface, such as a carpeted floor. The more energy absorbed by the surface, the less that remains in the ball for it to bounce.

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## 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 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 is it impossible for a ball to be 100% efficient?

No machine is free from the effects of gravity, and even with wonderful lubrication, friction always exists. The energy a machine produces is always less than the energy put into it (energy input). That is why 100% efficiency in machines shall not be possible.

## Can a perfectly efficient system ever be created?

The fact is, you can’t make a super-efficient system without any waste. No matter how good of an engineer you are, you can’t invent a perfect engine. Simply put, a heat engine is a machine or system that converts heat into other forms of energy.

## Can efficiency ever exceed 100 %? Explain?

In other words, no machine can be more than 100% efficient. Machines cannot multiply energy or work input. If a machine were 100% efficient then it can’t have any energy losses to friction, so no friction can be present. In that case the theoretical and actual mechanical advantages would be equal.

## How can you have greater than 100% efficiency but not greater than 100% utilization?

The achievement of the greater efficiency more than 100% can be achieved when the inputs of an organization are defined in a unique way making the work output such as product performance to be unique exceeding the 100%. If the work output is greater/exceeds the input then there efficiency is more than 100%.

## What is an example of a 100% efficient machine?

A simple machine, such as a lever, pulley, or gear train, is “ideal” if the power input is equal to the power output of the device, which means there are no losses. In this case, the mechanical efficiency is 100%.

## Can be considered a type of inclined plane wrapped around a cylinder?

A screw is an inclined plane wrapped around a cylinder.

## Does a screw change the direction of force?

Lever: Moves around a pivot point to increase or decrease mechanical advantage. Inclined plane: Raises objects by moving up a slope. Screw: A device that can lift or hold things together. Pulley: Changes the direction of a force.

## When a rope or cable is wrapped over a grooved wheel What is it called?

wheel and axle. a grooved wheel with a rope, cable or chain wrapped around it. The rope rides in the groove of the wheel, so when the rope is pulled the wheel turns. pulley.

## Does a wedge change direction of force?

The wedge is a simple machine whose use throughout history has been understated. It changes the direction of a downward force to a sideways force.

## What is a sloped surface that moves?

Inclined plane. simple machine that is a flat surface, sloped surface, or ramp. Wedge. simple machine consisting of an inclined plane that moves; can have one or two sloping sides. Screw.

## Which kind of inclined plane pushes up more steeper or flatter?

A: The inclined plane on the right has a more gradual slope, so it has a greater mechanical advantage. Less force is needed to move objects up the gentler slope, yet the objects attain the same elevation as they would if more force were used to push them up the steeper slope.

## Are there two inclined planes?

A wedge is two inclined planes placed back-to-back. A wedge allows you to push through and cut apart substances with less force than you would need to push through or pull the substance apart without the wedge.

## What happens when you raised the height of the incline?

Answer: When an object rests on a surface like the ramp, the ramp exerts a force called ‘normal force’ on the object, and this force is greater when the angle of incline is smaller. If the ramp is steep, the force of gravity can more easily overcome the force of friction.

## Is a wedge two inclined planes put together?

A wedge is a simple machine that is made up of two inclined planes forming a triangular shape. It provides mechanical advantage by converting the force applied at its end into forces perpendicular to the inclined surfaces.

## Is an inclined plane wrapped around a post?

A screw is an inclined plane wrapped in a spiral around a cylindrical post.

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