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

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In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons