In 20 S, a Particle Moving with Constant Acceleration Along the the X

Multiple Choice

In 2.0 s, a particle moving with constant acceleration along the x axis goes from x = 10 m to x = 50 m. The velocity at the end of this time interval is 10 m/s. What is the acceleration of the particle?

A) +15 m/s²
B) +20 m/s²
C) −20 m/s²
D) −10 m/s²
E) −15 m/s²