Chapter 3 Review ?’s
1) Can acceleration be negative when velocity is positive?
2) Can acceleration be non-zero when ‘v’ is zero?
3) What is v? what is Δx? what is a?
24 v
8
4) Can acceleration be non-zero when ‘v’ is constant?
5) P is acceleration positive or negative?
6) What is slope on a p-t graph equal to?
7) What is slope on a v-t graph equal to?
8) Throw something and let it come back down….. a.
What is v at the top? b.
What is a at the top?
9) For p-t graph below Is acceleration positive or negative? Is velocity positive or negative at all points?
10) In what type of situation would average velocity be equal to v i
and v f
?
11) At what point on the below v-t graph did the object turn around?
12) If an object was speeding up as it went from a position of xi=5 to xf=-2 would its acceleration be positive or negative?
13) What would an a-t graph of an object in free fall look like?
14) If an object is in free fall did it travel as much distance in the 4 th sec of fall as it did in the 2 nd ?
15) An object launched up from the ground at 35m/s….. how long would it take to get to its highest point? a.
What speed would it hit the ground with? What was ‘a’ at its highest point?
16) For v-t graph below is Δx positive or negative? a.
At any point is the object moving in negative direction?

17) For this p-t graph Is acceleration constant….. where is it + and where is it - ?
18) Object thrown down from a cliff at 5m/s. a.
What is its acceleration one sec later? b.
What is its velocity one sec later?
19) Object thrown up at 20 m/s a.
What is its ‘a’ one second later? b.
What is its ‘v’ one second later?
20) Draw the following v-t graph as a p-t graph….
20 Draw the following p-t graphs as v-t graphs
21) If an object has a negative velocity and a negative acceleration does that mean its speeding up or slowing down?
22) What is the acceleration of the following v-t graph?
23) Can an object change directions while having a constant non-zero acceleration?
24) Can an object have a constant speed while having a non-zero acceleration?
25) Can an object have a position that is becoming more positive while it has a negative acceleration?
26) Which segment of the p-t graph is the object moving the fastest?
27) p
15
5
5 10
What is v from 0s to 5 s?
What is v from 5 to 10 s?
What is Δx from 0-5 s?
Problems from book to know. Ch. 3 #’s 11,21,23,24, 31,32, 39, 42, 48, 54, 60-62, 110,111, 113 114, 118