Question

A skateboarder begins down a ramp at a speed of 3 m/s. After 3 s, her speed has increased to 7.0 m/s. Calculate her acceleration.

Answer 1

We have:

vi = initial speed = 3m/s

vf = final speed = 7m/s

t= time = 3 sec

a= acceleration

Apply:

a = (vf - vi) / t

a = (7 m/s - 3 m/s)/ 3 s

a = 1.3334 m/s^2