Displacement
What is displacement?
The shortest distance from the initial to the final position, along with the direction.
What is average velocity?
The total displacement divided by the total time taken.
What is acceleration?
The rate of change of velocity per unit time.
What does the slope of a distance-time graph represent?
Speed of an object
What is the pH of a neutral solution?
7
If a car moves 10 meters east and then 10 meters west, what is its displacement?
0 meters.
If a car travels 100 km east in 2 hours, what is its average velocity?
2 h /100 km=50 km/h east.
What are the units of acceleration?
m/s² (meters per second squared).
If a slope on a velocity-time graph is zero, what does this indicate?
The object is moving at a constant velocity
Which gas is most responsible for the greenhouse effect?
Carbon dioxide (CO₂)
Calculate the displacement of a runner who runs 3 km west and then 4 km east.
7 km east
A cyclist travels 30 km north in 1 hour and then 30 km south in another hour. What is their average velocity for the trip?
0 km/h (displacement is 0).
If a car speeds up from 20 m/s to 40 m/s in 5 seconds, what is its acceleration?
40 m/s−20 m/s divided by 5 s = 4 m/s2.
How do you calculate the slope of a line on a graph?
slope=rise over run
What type of energy is stored in a stretched rubber band?
Elastic potential energy
How does displacement differ from distance?
Displacement is a vector quantity with direction, whereas distance is a scalar quantity without direction.
How would you find the average velocity of an object with varying speeds?
Calculate total displacement and divide it by total time.
If an object is moving at a constant speed, what is its acceleration?
0 m/s²
What does a negative slope on a distance-time graph indicate?
The object is returning to its starting point.
What organelle is known as the “powerhouse of the cell”?
Mitochondria
If an object returns to its starting point, what is its displacement?
0 meters.
If a runner completes a 400 m sprint in 1 minute and 20 seconds, what is their average velocity?
5 m/s
Explain the difference between positive and negative acceleration.
Positive acceleration means an increase in speed, while negative acceleration (deceleration) means a decrease in speed.
If a graph shows a steep slope, what can be inferred about the object's motion?
The object is moving quickly.
What causes the seasons on Earth?
The tilt of Earth's axis