Safety & Quiz Habits
After any accident in the lab — even a minor one — this is the first thing you should do.
Tell the teacher immediately.
Convert 250 cm to meters.
2.50 m (2.5 m is acceptable).
What equation finds velocity from distance and time?
v = d ÷ t.
On a distance-time graph, a steeper straight line means the object is doing this.
Moving faster.
Why does a lab group run several trials instead of relying on just one measurement?
To improve reliability and reduce the effect of random measurement variation.
The chemistry glassware, chemicals, and equipment on the side benches are not part of the physics activity. What should you do with them?
Leave them alone / do not touch or use them.
Convert 3.4 m to centimeters.
340 cm.
A vehicle travels 96 cm in 4 s. What is its speed?
24 cm/s.
On a distance-time graph, a flat horizontal line means the object is doing this.
It is stopped.
Three distance trials are 141 cm, 138 cm, and 144 cm. What is the average distance?
141 cm
Which exit do you go to if there is a fire
Left one (or point to it)
Convert 45 mm to centimeters.
4.5 cm
A car travels 12.0 m in 4.00 s. What is its velocity?
3.00 m/s.
Two motion lines both pass through (0, 0). What does that tell you about their starting positions?
They both started at the 0 mark / same starting line.
Using an average distance of 141 cm at 6 s, what is the vehicle's speed?
23.5 cm/s
Every number in your calculations should have this written next to it.
A unit.
A hallway is 18.5 ft long. Using 1 ft = 0.3048 m, convert the hallway length to meters.
5.64 m
A cart moves at 0.40 m/s for 3.0 s. How far does it travel?
1.2 m
Two straight lines on a distance-time graph are parallel. What does that tell you about their speeds?
They have the same speed.
A car's interval velocities are 0.39, 0.38, 0.41, and 0.38 m/s. What is their average velocity?
0.39 m/s
Before turning in the quiz, you should check cancellation, reasonableness, rounding, and this other key feature of every numerical answer.
That the answer includes the correct unit.
Convert 90.0 km/h to m/s.
25.0 m/s.
A vehicle moves at 40 cm/s. How long does it take to travel 600 cm?
15 s
A third vehicle starts at 150 cm when t = 0 and its line is parallel to Vehicle Q. What two facts can you conclude?
It started 150 cm ahead and moves at the same speed as Vehicle Q.
On a distance-time graph, the data points form a nearly straight line. What does that say about the car's motion?
Its velocity/speed is approximately constant.