Definitions And Basics

Question 1

What is the definition of motion in a straight line?

Answer 1

Motion in a straight line refers to the movement of an object along a straight path.

Question 2

True or False: An object in motion will remain in motion unless acted upon by an external force.

Answer 2

True

Question 3

What is the formula for calculating average speed?

Answer 3

Average speed = Total distance / Total time

Question 4

Fill in the blank: The unit of distance in the International System of Units (SI) is ____.

Answer 4

meter

Question 5

What does the term ‘displacement’ refer to?

Answer 5

Displacement refers to the change in position of an object, measured as a straight line from the starting point to the final position.

Question 6

What is the difference between distance and displacement?

Answer 6

Distance is the total path length traveled, while displacement is the shortest straight-line distance from the initial to the final position.

Question 7

True or False: Velocity is a scalar quantity.

Answer 7

False

Question 8

What is the formula for calculating velocity?

Answer 8

Velocity = Displacement / Time

Question 9

What is uniform motion?

Answer 9

Uniform motion refers to motion at a constant speed in a straight line.

Question 10

Fill in the blank: The acceleration of an object is defined as the change in ____ per unit time.

Answer 10

velocity

Question 11

What is the unit of acceleration in the SI system?

Answer 11

meters per second squared (m/s²)

Question 12

True or False: An object can have a constant speed but a varying velocity.

Answer 12

True

Question 13

What does ‘negative acceleration’ indicate?

Answer 13

Negative acceleration indicates a decrease in the velocity of an object.

Question 14

What is the formula for calculating acceleration?

Answer 14

Acceleration = (Final velocity - Initial velocity) / Time

Question 15

Fill in the blank: The area under a velocity-time graph represents the ____ of an object.

Answer 15

displacement

Question 16

What is the term for the slope of a distance-time graph?

Answer 16

Speed

Question 17

True or False: A straight line on a distance-time graph indicates constant speed.

Answer 17

True

Question 18

What is the relationship between speed, distance, and time?

Answer 18

Speed = Distance / Time

Question 19

What does a horizontal line on a velocity-time graph represent?

Answer 19

A horizontal line on a velocity-time graph represents constant velocity.

Question 20

Fill in the blank: The initial velocity of an object is denoted as ____.

Answer 20

u

Question 21

What is the significance of the ‘final velocity’ in motion equations?

Answer 21

Final velocity is the velocity of an object at the end of a time interval.

Question 22

True or False: An object in free fall is an example of motion in a straight line.

Answer 22

True

Question 23

What conditions must be met for an object to be in uniform acceleration?

Answer 23

An object must have a constant acceleration over time.

Question 24

What is the formula for calculating distance under uniform acceleration?

Answer 24

Distance = Initial velocity * Time + 0.5 * Acceleration * Time²

Question 25

Fill in the blank: The concept of inertia is closely related to ____ in motion.

Answer 25

Newton’s first law

Question 26

What is the effect of gravity on objects in free fall?

Answer 26

Gravity causes objects in free fall to accelerate downwards at approximately 9.81 m/s².