Me! in a collision, kara less who was traveling at 11 m/s while texting in her 1300 kg car, is struck by another vehicle and finds herself and her phone suddenly moving 2.5 m/s in the opposite direction. what impulse does she experience? show work

answer choices

a. -12,000
b. -14,000
c. -16,000
d. -18,000

D. -18,000

Explanation:

Let's define impulse :

hence in this question ,

kara is initially moving with the :

therefore the initial momentum =

and the final momentum =

thus the change in momentum : -

= -3250-14300 = -17550 ≅ -18000

5 w for 1hr = 5x60x60 joules=300x60=3000x6=18,000j as total energy conversion. efficiency of bulb needed for radiant to thermal within 18000

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge