肌(史各3 。 和
2 IFig. 2-16, an electron with an ”Nonaccclcratng AcceleraU
initial_velocity uo三3.70x 105m/S Tegion region
centersaregionoflength工三2.30 cm
where it is electrically accelerated-
Tt emerges With 三和40x107m/S.
What is its acceleration。assumed Path 5f
constant? electron
3 A driver increases the car speed
ata cons ate_from 15 km/h to
4人0一 人
Figure 2-16 Problem 2
(3) How mucn user
the vehicle travelfrom Start to Stop:
hen
ded toward each other along a track W
10”Two trains are heai (
the conductors suddenly notice
each other. Figure 2-18 glves
their velocities 35 functions
oftime f as the conductorS Slow
the trains. The figure's vertical
scaling is Set by 人三 60 m/s. The
slowing processes begin when
the trains are 320 m apart. What Figure 2-18 Problem 10.
is their separation when both
trains have stopped?
時
宣 一snrnnnrlevelat
34 A _ rock climber acci-
dentally allows a piton to fall
freely from ahigh point on the
ITock wall to the valley below
him at time /==0. Then, after
a 全Dort delay,his climbing
partner, whois15mhigheron
