Weeniedog21 Weeniedog21

22-10-2021
Physics

contestada

A 77 kg girl and a 62 kg boy face each other on friction free roller skates. The girl pushes the boy, who moves away at a speed of 2.5 m/s. What is the girl's speed?

Respuesta :

Аноним Аноним

22-10-2021

Answer:

Explanation:

conservation of momentum

Initial momentum is zero

77v + 62(2.5) = 0

77v = -155

v = -155/77 = -2.0129870...

|v| = 2.0 m/s

Answer Link

Otras preguntas

A rectangular field is ten times as long as it is wide. If the perimeter of the field is 2090 feet, what are the dimensions of the field?

For a ride on a rental scooter, Chris paid a $7 fee to start the scooter plus 7 cents per minute of the ride. The total bill for Chris's ride was $19.67. For ho

Name he center and radius of the following circle (X+2)^2+(y-5)^2=64

Which observation is true about organisms that carry the same genes?A. They will have the same phenotype, even if there are differences inexpression of the gene

Figure G'H'TI' is the rotation imageof figure GHIJ. Identify the center of rotation, I, the angle of rotation, and the direction of rotation.

below is a given formula in probability,based on the hint given you should show how the given formula was found based on the hint given below

Four functions are given below. Either the function is defined explicitly, or the entire graph of the function is shown.For each, decide whether it is an even f

help meeeee pleaseeeee!!! thank you

A landscape supply business charges $35 to deliver mulch. The cost of the mulch is $29 per cubic yard. Write a linear equation to find the cost of having x cubi

A vehicle uses 3 gallons of gasoline to travel 19 1/2 miles. At this rate, how many miles can the vehicletravel per gallon of gasoline?