What is the ratio keafter/kebefore of the total kinetic energy after the collisions occur to that before the collisions occur?

is called square of Coefficient of Restitution

Explanation:

As we know that the coefficient of restitution is the ratio of the body after collision to the ratio of the body before collision.

Mathematically:

where:

relative velocity after collision

relative velocity before collision

also, in terms of Kinetic energy:

where:

relative kinetic energy after collision

relative kinetic energy before collision

emily ruth's annual premium is $1058.50

step-by-step explanation:

emily ruth is a female of 27 years age purchasing 20 year endowment insurance with face value $25000.

from the given table,

for females, the age of a male 3 years younger should be used.

so, we have to check for 24 year male for 20 year endowment.

it is 42.34 for every $1000 face value.

for a face value of $25000,

it is 25 * 42.34 = $1058.50

∴ emily ruth's annual premium is $1058.50

an energy transformation flow diagram is shown

where is it ?