Question

change in speed / change in time 2. Which combinations of signs of velocity and acceleration are physically possible? Choose all correct answers. a) positive velocity, positive acceleration b) positive velocity, negative acceleration c) negative velocity, positive acceleration d) negative velocity, negative acceleration 3. What is the single measurement digital uncertainty of the measurement \"15.8 kg\"? a) +/-0.04 b) +/-0.04 kg c) +/-0.05 d) +/-0.05 kg e) +/-0.1 f) +/-0.1 kg g) +/-0.5 h) +/-0.5 kg 4. You measure the speed of a \"constant-speed car\" six times with a speedometer. The single- measurement digital uncertainty is +/- 0.005 mi/hr, and the standard deviation of the measurements is 0.134 mi/hr. What is the uncertainty in the speed of the car? a) +/-0.005 mi/hr b) +/-0.134 mi/hr c) Either +/-0.005 mi/hr or +/-0.134 mi/hr d) +/-0.139 mi/hr

          change in speed / change in time
2. Which combinations of signs of velocity and acceleration are physically possible? Choose all correct
answers.
a) positive velocity, positive acceleration
b) positive velocity, negative acceleration
c) negative velocity, positive acceleration
d) negative velocity, negative acceleration
3. What is the single measurement digital uncertainty of the measurement \"15.8 kg\"?
a) +/-0.04
b) +/-0.04 kg
c) +/-0.05
d) +/-0.05 kg
e) +/-0.1
f) +/-0.1 kg
g) +/-0.5
h) +/-0.5 kg
4. You measure the speed of a \"constant-speed car\" six times with a speedometer. The single-
measurement digital uncertainty is +/- 0.005 mi/hr, and the standard deviation of the measurements is
0.134 mi/hr. What is the uncertainty in the speed of the car?
a) +/-0.005 mi/hr
b) +/-0.134 mi/hr
c) Either +/-0.005 mi/hr or +/-0.134 mi/hr
d) +/-0.139 mi/hr

change in speed / change in time
2. Which combinations of signs of velocity and acceleration are physically possible? Choose all correct
answers.
a) positive velocity, positive acceleration
b) positive velocity, negative acceleration
c) negative velocity, positive acceleration
d) negative velocity, negative acceleration
3. What is the single measurement digital uncertainty of the measurement 1̈5.8 kg?̈
a) +/-0.04
b) +/-0.04 kg
c) +/-0.05
d) +/-0.05 kg
e) +/-0.1
f) +/-0.1 kg
g) +/-0.5
h) +/-0.5 kg
4. You measure the speed of a c̈onstant-speed cars̈ix times with a speedometer. The single-
measurement digital uncertainty is +/- 0.005 mi/hr, and the standard deviation of the measurements is
0.134 mi/hr. What is the uncertainty in the speed of the car?
a) +/-0.005 mi/hr
b) +/-0.134 mi/hr
c) Either +/-0.005 mi/hr or +/-0.134 mi/hr
d) +/-0.139 mi/hr

Added by Gloria A.

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