What is the mass of a train traveling at an
acceleration of 40 m/s2 with a force of 360 N?

my ding dong   is hard as a rock

no neither are correct. you can find the answer on page 2.2, under the heading "enunciation and pronunciation"

stating:

"enunciation is the way you form your words when you speak. pronunciation is how you say each syllable."

pf

i dont care who you give brailiest to. its up to you

but nice try to the other answer

close

but dont give me brailiest

the correct answer is:

b. substitution property.

if the circle m is with inscribed ∠kjl and congruent radii jm and ml then m = ∠mjl = (kl) because of the substitution property.

the correct answer is moro reflex. this is usually witnessed in infants normally up to the age of 4-5 months (in some cases maybe more)  

it is caused by a sudden loss of support that makes the baby feel as if he or she is falling or is going to fall and hence the flinging of the arms and crying.