Question

A particle has:

A.) an average acceleration of 6 m/s2 if it goes from 2 m/s to 6 m/s in 2 seconds.

B.) an average acceleration of 4 m/s2 if it goes from 2 m/s to 6 m/s in 2 seconds.

C.) an average acceleration of 12 m/s2 if it goes from 2 m/s to 6 m/s in 2 seconds.

D.) an average acceleration of 3 m/s2 if it goes from 2 m/s to 6 m/s in 2 seconds.

E.) an average acceleration of 2 m/s2 if it goes from 2 m/s to 6 m/s in 2 seconds.

Answer 1

dx/dt= 2 m/s -> 6 m/s

total change in speed 4 m/s -> change in speed = acceleration/deceleration

over 2 seconds, d2x/d2t= 2 m/s^2