A locomotive starts from rest and accelerates at 0.12 meter per second2 to a speed of 2.4 meters per second
in 20. seconds. This motion could best be described as
A) constant acceleration and constant velocity
B) increasing acceleration and constant velocity
C) constant acceleration and increasing velocity
D) increasing acceleration and increasing velocity

This motion could best be described as  C) constant acceleration and increasing velocity

Explanation:

Constant acceleration motion or uniformly accelerated rectilinear motion (u.a.r.m) is a movement in which mobiles move in a straight line at a speed that varies uniformly over time. In other words, the u.a.r.m occurs when its path is a straight line and its acceleration is constant and different from 0. This implies that the speed increases or decreases its modulus in a uniform way.

This type of movement occurs in this case, where the acceleration will then be constant and as the locomotive starts from rest and moves up to a speed of 2.4 meters per second. in 20 seconds, then the speed will increase evenly.

So, this motion could best be described as  C) constant acceleration and increasing velocity.

real, smaller and upside-down.   so the answer should be b.

f=ma newton

f=100x2.5=250n