Question

What is the average acceleration of a jet ski that goes from rest to 10 m/s west in 4 s? Take the direction west to be positive, and east to be negative.

A. 2.5 m/s^2

B. -2.5 m/s^2

C. 0.4 m/s^2

D. -0.4 m/s^2

Answer 1

a=v/t
but i don't understand what is negative to east but west positive.

Answer 2

i got it it was a

Answer 3

That's great! After my help or before my help? just kidding.

Answer 4

before lol