261,364 views
39 votes
39 votes
If a person has an acceleration of -1.5 m/s/s, then after 3.0 s thier velocity will have changed by m/s. If the initial velocity of the person was 2.0 m/s, then their new velocity is m/s. The initial velocity was in the direction and their final velocity was in the direction, so this person must have turned around during the 3.0 s. The average velocity of the person during the 3.0 s was m/s so their change in position during the 3.0 s must have been m. However, the distance the actual distance they covered was than their change in position because they changed direction.

If the person's initial position was 2.0 m, then their final position will be _____________ m.

User Mark Maxham
by
2.9k points

1 Answer

25 votes
25 votes

Answer:

-1.5 m/s/s + (3.0 s + 2.0 m/s) = -7.5 m/s/s

-7.5 m/s/s x 3.0 s × 3.0 s × 3.0 s = - 202.5

User Sayan Sen
by
3.1k points