Question

What is an object’s acceleration if it is moving at 30 m/s and comes to a stop in 5 s?

–30 m/s2
–6 m/s2
6 m/s2
30 m/s2

Answer 1

@MysticFury

Answer 2

id say C cause 5 x 6 is 30 so 6 m a second but im not sure

Answer 3

i thin it is the second one

Answer 4

final -initial
\[a=\frac{ v_f-v_i }{ t }=\frac{ (0-30)~m/s }{ 5~s }\]

Answer 5

oh hey so i was right i believe @peachpi

Answer 6

-6 m/s, the second one

Answer 7

yeah i did it right

Answer 8

You increase your walking speed from 1 m/s to 3 m/s in a period of 1 s. What is your acceleration?

4 m/s2
3 m/s2
5 m/s2
2 m/s2

Answer 9

i think a is the answer am i right?