dinahthefluffyfoxx dinahthefluffyfoxx

12-01-2017
Chemistry

contestada

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/s2

B.
-2.5 m/s2

C.
0.4 m/s2

D.
-0.4 m/s2
whats the answer i need help please

Respuesta :

AbhiGhost AbhiGhost

12-01-2017

A.) Average acceleration = change in velocity/time = final velocity - initial velocity/time = 10-0/4 = 10/4 = 2.5m/s^2.

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