Physics / One-dimensional motion

Question 1

What is Instantaneous Speed?

Answer 1

It is the speed of an object at a particular moment in time.

Question 2

What is Instantaneous Velocity?

Answer 2

It is the speed of an object at a particular moment in time with the direction of that speed.

Question 3

Formula for Average Speed?

Answer 3

Average speed = distance traveled / time interval

Question 4

Formula for Average Velocity?

Answer 4

Average velocity = displacement / time interval

Question 5

What is distance?

Answer 5

Distance is defined to be the MAGNITUDE or size of DISPLACEMENT between 2 POSITIONS.

Question 6

What is distance traveled?

Answer 6

Distance traveled is the TOTAL LENGTH of the path traveled between 2 positions.
Distance traveled is not a vector. It has no direction and, thus, no negative sign.

Question 7

How many ways the word ‘distance’ is used in Physics and which?

Answer 7

It is used in 2 ways.

1. Distance between 2 points
2. Distance traveled by the object

Question 8

What is Displacement?

Answer 8

Displacement is defined to be the change in position of an object.

Question 9

Formula for Displacement?

Answer 9

Displacement = Delta x = xf - x0
where,
xf is value of the final position
x0 is value of the initial position
Delta x is the symbol used to represent displacement

Question 10

What does the slope represent on a position graph?

Answer 10

The slope of a position graph represents the velocity of the object. So the value of the slope at a particular time represents the velocity of the object at that instant.

Question 11

Formula for slope of the graph?

Answer 11

slope = x2 - x1 / t2 - t1