※ 引述《dasea (植栽雞肉飯)》之銘言：
1.if a car is moving straight forward with constant velocity 100 km/hr
(kilometers per hour).how many seconds does it take to complete a journey of 5
km?a.30 seconds b.60 seconds. c.120 seconds. d.180 seconds.
2.similar to the above question,if the car start with 0 velocity and
accelerate (with constant acceleration 3 m/s2)to the velocity 30 m/s and
remains at this velocity,how much time does it take to complete the journey
of 6 km?a.180 seconds. b.200 seconds. c.210 seconds. d.220 seconds.
3.a free-fall body released from taipei 101 building is subject to what forces
?a. gravitational force only.b.air resistance only c.both gravitational force
and air resistance.d. none of the above.
4.similar to the above,suppose ball a and ball b have the same size,shape,and
surface roughness, but ball a is heavier than b.if the two ball are released
from the top of the building at the same time,which one strikes the ground
first?a.ball a. b.ball b. c.both at the same time. d.connot be compared.
5.because of air resistance(usually with magnitude proportional to the speed)
,a free-fall body will a.reach a constant terminal velocity after a while.b.
keep increasing velocity until striking the ground.c.keep decreasing velocity
until striking the ground.d.none of the above is correct.
6.neglecting air resistance, a projectile with 9.8 m/s initial upward velocity
released from the ground will fall back to the ground after a.1 second.b.2
seconds.c.3 seconds. d.4 seconds.
7.if a prjectile;s motion starts and ends at the ground,which release angle
(measured from the ground)will maximize its horizontal distance?a.45 degree.b.
50 degrees.c.55 degrees.d.60 degrees.
8.similar to the above,if a projectile's motion stars from the ground but ends
at somewhere higher than the ground,the release angle which maximizes its
horizontal distance will be a.lower than b.higher than c.the same as d.similar
to the answer in question 7.
9.if a particle's position x can be expressed as a function of time,that is
x(t)=2t+sin(t)+et,then its acceleration should be a.2+cos(t)+et. b.2-cos(t)
+et.c.cos(t) d.-sin(t)+et.
10.suppose 3 particles with mass m1,m2,m3,and position x1,x2,x3,respectively.
the center of mass position of the 3-particle system is at a.(x1+x2+x3)/3
b.((x1+x2+x3))/(m1+m2+m3)c.(m1x1+m2x2+m3x3)d.(m1x1+m2x2+m3x3)/(m1+m2+m3)
11.suppose air resistance is neglected.a gymnast takes off for performing
somersaults(body rotations)in the air.from takeoff to the instant when the
gymnast's center of mass reaches the highest point,the total linear momentum
will be a.decreased. b.increased. c.the same. d. cannot be estimated.
12.similar to the above,the angular momentum will be a.decreased.b.increased.
c.the same.d.cannot be estimated.
13.in the air,if the gymnast suddenly extends her upper and lower limbs to
perform a stright(lay out)somersault,the angular velocity will be a.decreased.
b.increased.c.the same. d.cannot be estimated.
二.跨欄選手在跨欄時,選手四支通常都在不同的方向以維持身體的平衡,請問是利用牛頓
哪個運動定律?請詳加敘述?
三.
四.
五.
試解釋submaximal exercise下,ventilatory control的機轉
六.請說明altitude training的利與弊?其較佳之training method為何?
七.是說明運動中的acid-base balance是如何調控
八.說明skeletal muscle的age-related change.如何可改善或維持?
九.解釋名詞:
a.blood doping b.arterial-venous oxygen difference c.double-blind research
design d.anaerobic threshold e.heat injury
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※ 編輯: dasea 來自: 61.58.22.74 (09/12 14:56)
※ 編輯: dasea 來自: 61.58.22.74 (09/13 14:59)
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