Dis&Disp
How to calculate distance from speed
(Formula for distance )
distance = speed X time
True or False
True
Velocity is nothing but speed with ___________
direction
In graph on what axis you represent dependent variable?
y - axis
A person walks 10 m east and then 6 m west. What is the person's displacement?
4 m east
A car travels at a constant speed of 12 m/s for 15 s. How far does it travel?
180 m
Formula for speed
s= distance /time
Unit of velocity
m/s
In Position–time graph
Slope = ______________
Velocity
A straight line on a position–time graph goes from 30 m at 0 s to 10 m at 5 s. What is the velocity?
-4 m/s
A particle moves in a straight line at 7 m/s for 12 s without changing direction. What is its distance traveled
84 m
A runner travels 150 m in 30 s. What is the runner's average speed?
5 m/s
A cyclist travels 100 m east in 20 s and returns 100 m west in 30 s. What is the average velocity for the round trip?
0 m/s
What does the flat line mean about motion? In a distance Vs time graph
Object at Rest
An object's velocity increases uniformly from 0 m/s to 10 m/s in 4 s. What is its displacement during this time?
20 m
An object moves 20 m east and then 20 m west
What is the distance ?
What is the displacement?
Distance = 40 m
Displacement = 0 m
A cyclist travels 100 m east in 20 s and returns 100 m west in 30 s. What is the average speed for the entire trip
4 m/s
Two people walk along a straight road. One moves east at 9 m/s, while the other moves west at 4 m/s. What is the velocityof the first person relative to the ground, and the difference between their velocities in the east-positive coordinatesystem?
13 m/s east
In a graph
x - axis represents Time (s)
y- axis represents distance(m)
What is the unit of the slope?
m/s
A position–time graph is a horizontal line at 10 m from t=0 s to t=6 s. What is the object's velocity?
0 m/s
An object moves at +5 m/s for 4 s and then at −5 m/s for 4 s. What are its total distance and net displacement?
Total distance = 5(4)+5(4)=40 m;
displacement = 20−20=0 m.
Car A travels 100 m in 10 s, while Car B travels 100 m in 20 s. Which is correct?
B
A car travels east for 10 s and then west for 10 s at the same speed. What can you conclude about its average velocity overthe whole trip if the distances traveled in each direction are equal?
C
speed–time graph
Area under curve =__________
distance
Two objects have straight lines on the same position–time graph. Line A is steeper than line B, and both lines slopeupward. Which statement is correct?
A