Chapter 2 Motion in One Dimension

2.

(a).

(b).

3.

(a).

(b).

(c).

(d).

(e).

12.

18.

(f) The acceleration vectors would be changing in length and the velocity vectors would not be increasing in length at a constant rate.

22.

Stopping distance from 35.0 mi/h is 40.0 ft.

First find the acceleration using . Since so, and . Since the acceleration is the same in both cases set and solve for .

27.

find v_o

Here is the easy I referred to in class

where .

 so .

Rearrange to get

Now you have two simultaneous equations with two unknowns, v and v_o that you can solve for v

by adding the two equations and get,

or