davissydneye davissydneye

25-02-2020
Physics

contestada

Calculate the change in momentum of a 10kg object that has an initial speed of 15m/s and slows to 8 m/s. If
this change occurs over a time of 3s, what force caused the change?

Respuesta :

Onoriodefelix Onoriodefelix

25-02-2020

Answer:

-23.33N

Explanation:

Momentum f = m (v - u) / t

given mass m = 10kg

Final velocity v = 8m/s

Initial velocity u = 15m/s

Time t = 3 secs

Using the above formula

F = 10 ( 8 - 15) /3

= 10 x -7 /3

= -70/3

= -23.33N

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