PHYSICS 201 01
QUIZ 5
Dr. Dan Smith September 28, 1995
1. A certain human hair is 95µm in diameter. Another way of writing this is
(a) 95x10-3m (b) 95x10-6m (c) 95x10-9m (d) 95x10-2m
(e) none of these
2. By walking as fast as possible, a person walks around a city block in 20 minutes. A
possible value for her average speed is
(a) 2.0mi/hr (b) 20m/s2(c) 3.0m2/s (d) 12.0mi/min2(e) 20mi2/min
3. A certain velocity has an x-component of 3.5m/s and a y-component of 5.0m/s. What is
the magnitude of that velocity?
(a) 1.5m/s (b) 8.5m/s (c) 6.1m/s (d) 37.3m/s (e) none of these
4. A ball is thrown straight upward from the top of a 10m tall building with a velocity of
30m/s. The ball reaches a maximum height then falls to the ground. Fill in numerical
values below wherever there is a blank to the right of an equal sign.
y
t=0 y =0
a=-9.8m/s2
t=tmax
max
y=y v=_____ , a=_____
t=t , v=vgg
y=_____, a=_____
v =_____