## What is a rebound ratio in math?

the mathematical relationship between how many. times a ball has bounced and the height of each. bounce.

## How do you measure the rebound height of a ball?

Between the first and second bounces, the height can be expressed as h = 140 − 16(t − 6.49)2, 3.54 ≤ t < 9.45. The 6.49 is when the highest point is achieved (halfway between the two bounces), and the 9.45 seconds is derived from adding 3.54 seconds to the time between the first and second bounces.

## How do you calculate rebound velocity?

v ^2 = 2gh. Square of the ground velocity is proportional to height from which it is dropped. Time between first and second bounce is 2*1.515 = 3.03 s.

## What is the relationship between drop height and rebound height?

The relationship between drop height and bounce height is only linear for small drop heights. Once a ball reaches a certain height, the bounce height will begin to level off because the ball will reach its terminal velocity.

## How do I calculate potential energy?

For the gravitational force the formula is P.E. = mgh, where m is the mass in kilograms, g is the acceleration due to gravity (9.8 m / s2 at the surface of the earth) and h is the height in meters. Notice that gravitational potential energy has the same units as kinetic energy, kg m2 / s2.

## How do you calculate the energy efficiency of a ball?

Calculate the energy efficiency. To do this, divide the average bounce height by the drop height (150 cm) and multiply by 100.

## How do you calculate energy loss in physics?

The energy loss is equal to the work done by the friction force. where = distance the object slides. Energy is lost to heat as the object overcomes kinetic friction as it slides up the ramp. The energy loss is equal to the work done by the friction force.

## How do you calculate power from energy and time?

Power is equal to work divided by time.

In this example, P = 9000 J / 60 s = 150 W .