1. Rushin is waiting at a stoplight. When it finally turns green, Rushin accelerated from rest at a rate of a 2.00
m/s2 for a time of 15 seconds. Determine the velocity of Rushin's car during this time period.
a. -30 m/s2
c. 7.5 m/s
b. 30 m/s2
d. 30 m/s
2. Ima is approaching a stoplight moving with a velocity of +30.0 m/s. The light turns yellow, and Ima applies
the brakes and skids to a stop. If Ima has an acceleration rate of 8.00 m/s2, determine the displacement of the
car during the skidding process.
56.3 m
cannot determine
b.
240 m
d.
a.
C.
4.3 m
3. A car slows down uniformly from a speed of 21.0 m/s to rest in 6.00 seconds. What was its average velocity?
How far did it travel in that time?
a. 10.5 m/s; 63 m
c. 10.5 m/s; 0.29 m
b. 21.0 m/s ;126 m
d. cannot determine
Ni

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin.answer in one word.part bfind e(r), the magnitude of the electric field at distance r from the point charge q.express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q.express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r

Language is not the only way that humans communicate. describe how we use sound, touch, chemicals, and sight to communicate. need answer asap

The applied force of 3 washers will increase the applied force on the car to n.