jovargas20 jovargas20
  • 03-02-2020
  • Physics
contestada

A person with mass 65 kg, standing still, throws an object at 4 m/s. If the
recoil velocity of the person is 3.5 m/s, what is the mass of the object?
Assume the surface to be frictionless.

Respuesta :

MathPhys
MathPhys MathPhys
  • 03-02-2020

Explanation:

Momentum before = momentum after

m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂

(65 kg) (0 m/s) + m (0 m/s) = (65 kg) (-3.5 m/s) + m (4 m/s)

m ≈ 57 kg

Answer Link

Otras preguntas

help me please will give brainliest ​
After allowing 20% discount and the living of 23%vat a television is sold. If the discount amount is Rs1500 then find the vat amount
Can someone submit a picture of this drawing? Will give brainliest!! If you answer anything but a picture of this drawing your account will be deactivated! -D
Which graph shows a function whose inverse is also a function?
Find the x-intercept and y-intercept of the line. -3x+6y=11
Help immediately!!!!! Question: select all the intervals where g is increasing.
The symbol located to the left of a code number that identifies a code description that has been revised is _____.
find the value of a,b,c​
كيف يسير يومك .........​
Cystitis is an inflammation of the bladder usually caused by an ascending organism introduced through the: