29 Questions
What is acceleration?
A change in the velocity of an object over time
How is acceleration measured?
Meters per second per second
What is the acceleration due to gravity on the surface of the Earth?
-9.8 m/s/s
If you drop a ball in mid-air, what happens to its velocity?
It changes
What equipment is needed for the physics lab mentioned in the text?
Stopwatch and tape-measure
In the physics lab experiment, why are four pieces of duct tape stuck at equal distances from each other?
To enable accurate timing and distance measurement
What happens when the stopwatch lap button is pressed in the physics lab experiment?
The time taken for the ball to reach each marker is recorded
What is the first step to analyze the data collected in the experiment?
Plot a velocity-time graph
Why should the velocity numbers be negative when calculating velocities for each section?
Because the ball is going downwards
What should you do to calculate the time to put into the equation for velocity in each section?
Subtract the time at which the ball reached one piece of duct tape from another to determine travel time
What does the slope of the velocity-time graph represent?
Change in velocity over time which is acceleration
Why might the calculated acceleration not match the expected value of -9.8?
Presence of air resistance slowing down the ball
How can you improve accuracy when calculating velocities for each section?
Press the stopwatch button more accurately
What factor could cause difficulties in obtaining an exact acceleration value?
Variation in air resistance during the experiment
Why should the velocity numbers be negative when calculating velocities for each section?
To account for the downward motion of the ball
What could be a reason for not obtaining an exact acceleration value in the experiment?
Averaging speeds instead of calculating instantaneous speeds
What factor contributes to air resistance affecting the velocity of the ball in the experiment?
The texture of the ball's surface
How does subtraction play a role in calculating velocity for each section in the experiment?
To determine how long it took to travel between specific points
What does the slope of the velocity-time graph represent in the experiment?
Acceleration
What importance does comparing the calculated acceleration to -9.8 hold in the experiment?
To evaluate proximity to expected gravitational acceleration
How does using a time right in the middle of each section enhance accuracy in velocity calculations?
It provides more precise estimations of time
What difficulties could arise when pressing the stopwatch button at the right time during the experiment?
Unable to determine time accurately
In the physics lab experiment, what does an acceleration of -9.8 m/s/s indicate about the falling ball?
It is speeding up at a constant rate.
If two different balls are dropped simultaneously from the same height in the experiment, what would be their acceleration rates relative to each other?
Both will accelerate downwards at -9.8 m/s/s.
How does the velocity of a falling object change as it moves further from the surface of the Earth?
It decreases.
What role does duct tape play in the physics lab experiment described in the text?
To ensure the ball drops straight down without deviation.
If an object is free-falling in a vacuum, what value would its acceleration due to gravity be?
+9.8 m/s/s
What happens to an object's acceleration if it is moving upwards but slowing down?
Acceleration remains positive but decreases in magnitude.
Why do all objects accelerate at -9.8 m/s/s on the surface of the Earth according to the text?
Due to gravitational force.
Test your knowledge on accelerating objects, which are objects that are speeding up or slowing down based on changes in velocity over time. Learn about how acceleration is measured in meters per second per second, and how falling objects accelerate.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
