1. Acceleration
Velocity (speed) measures a rate of change in position (distance/time).
Acceleration measures a rate of change in velocity (Velocity/time)….V2-V1/time.

2. #1
A car taking a turn at a constant speed is accelerating---TRUE. *Change in velocity due to direction.
If an object has low acceleration, it isn’t moving very fast---FALSE. *Cruise control in a straight line is one example.
An accelerating car is always gaining speed---False. *Could just be changing direction for example!

3. Didn’t do #2. #3-Moving around a center.
#5-Two components of a vector are magnitude and direction.
#6-Units for acceleration---you should have underlined: meters per second per second OR in other words, meters per second squared (m/s2)

4. #7---velocity is unchanged from B-C!
B---8m/s, t= 1s C ---8m/s, t= 2s
Velocity 2 (8m/s) – Velocity 1 (8m/s)
1 second
0/1 = 0 m/s2 Velocity is unchanged.

5. #8—
A-B Velocity 2 (8m/s) – Velocity 1 (4m/s) ÷ 1 sec.
8-4/1
4 m/s2
Whole trip– (7 m/s-4 m/s) ÷ 3 s
3/3 = 1 m/s2

6. #9—Increase in velocity (underline) Positive Acceleration.
Decrease in velocity (underline) Negative Acceleration.

7. Centripetal Acceleration
#10—What direction is the acceleration in centripetal acceleration, where speed does not change and direction does? --Perpendicular to the direction of motion. In order for an object to execute circular motion - even at a constant speed - the object must be accelerating towards the center of rotation. How does centripetal acceleration feel in real life? It feels like a force pushing you into the car door when turning. It’s what keeps you in your seat on the rollercoaster, or plastered against the wall in a gravitron. The centripetal force (created by centripetal acceleration….circular movement creates this) is the force that causes an object to move in a circle, acting towards the center of the circle. In the case of a satellite the centripetal force is gravity, in the case of an object at the end of a rope, the centripetal force is the tension of the rope.