Scalar Quantities have............and suitable unit.
Scalar quantities are defined by their magnitude and unit, without direction.
Vector quantities have..........along with magnitude and unit.
Vector quantities have both magnitude and direction.
Which one is a vector quantity.......
Weight is a vector quantity because it has both magnitude and direction.
Which one is a scalar Quantity.........
Time is a scalar quantity because it has only magnitude.
Distance is a............quantity.
Distance is a scalar quantity because it has only magnitude.
What is SI unit of acceleration
The SI unit of acceleration is meters per second squared (m/s²).
What is SI Unit of Velocity.
The SI unit of velocity is meters per second (m/s).
Shortest distance between two points is called
The shortest distance between two points is called displacement.
A body is said to be at rest when:
A body is said to be at rest when it does not change position relative to surroundings.
Translatory motion is defined as:
Translatory motion is defined as all points of a body moving uniformly along the same straight line.
The motion of a car on a straight road is an example of:
The motion of a car on a straight road is an example of linear motion.
What type of motion does a spinning top exhibit?
A spinning top exhibits spin motion.
Distance differs from displacement because:
Distance differs from displacement because distance has no direction, displacement does.
The gradient of a distance-time graph represents:
The gradient of a distance-time graph represents speed.
Which quantity is a vector?
Displacement is a vector quantity.
Acceleration is the rate of change of:
Acceleration is the rate of change of velocity.
The value of gravitational acceleration (g) near Earth’s surface is:
The value of gravitational acceleration (g) near Earth’s surface is approximately 10 m/s².
The motion of a pendulum is best described as:
The motion of a pendulum is best described as oscillatory motion.
Which motion involves an object moving along a circular path?
Circular motion involves an object moving along a circular path.
An object with uniform speed covers:
An object with uniform speed covers equal distances in equal time.
Gravitational force always acts:
Gravitational force always acts towards Earth’s center.
Kinematics is the study of:
Kinematics is the study of motion of objects without considering forces.
Mechanics is divided into:
Mechanics is divided into Kinematics and Dynamics.
A train on a platform is in motion when:
A train on a platform is in motion when its position changes relative to surroundings.
Rest and motion are:
Rest and motion are relative to the observer’s frame of reference.
A passenger in a moving bus is at rest relative to:
A passenger in a moving bus is at rest relative to other passengers in the bus.
An observer outside a moving bus sees passengers as:
An observer outside a moving bus sees passengers as in motion.
What type of motion is exhibited when all parts of an object move uniformly along the same straight line?
Translatory motion is exhibited when all parts of an object move uniformly along the same straight line.
Which of the following is an example of *linear motion*?
A train moving on a straight track is an example of linear motion.
Motion along a circular path (e.g., an artificial satellite orbiting Earth) is categorized as:
Motion along a circular path is categorized as circular motion.
The irregular, zigzag motion of houseflies or smoke particles is termed:
The irregular, zigzag motion of houseflies or smoke particles is termed random motion.
Rotatory motion involves:
Rotatory motion involves spinning around a fixed axis passing through the body.
Which motion is demonstrated by a child swinging on a playground swing?
A child swinging on a playground swing demonstrates vibratory motion.
Brownian motion is an example of:
Brownian motion is an example of random motion.
What distinguishes *translatory motion* from *rotatory motion*?
Translatory motion involves all parts moving uniformly; rotatory motion involves spinning around an axis.
A Ferris wheel’s motion is an example of:
A Ferris wheel’s motion is an example of rotatory motion.
The definition "*Back-and-forth motion about a mean position*" refers to:
The definition "Back-and-forth motion about a mean position" refers to vibratory motion.
What is the displacement when a person moves from point A to B and back to A?
Displacement is zero because the person returns to the starting point.
Which is a scalar quantity?
Distance is a scalar quantity.
A car travels 700 m in 35 s. What is its speed?
The speed of the car is 20 m/s.
Acceleration is the rate of change of:
Acceleration is the rate of change of velocity.
SI unit of acceleration is:
The SI unit of acceleration is m/s².
A bus starts from rest and reaches 15 m/s in 5 s. Its acceleration is:
The acceleration of the bus is 3 m/s².
Uniform velocity means:
Uniform velocity means equal distance in equal time in a fixed direction.
Velocity changes from 10 m/s to 20 m/s in 2 s. Acceleration is:
The acceleration is 5 m/s².
Acceleration occurs when:
Acceleration occurs when speed changes or direction changes.
Displacement from A to B (6 km west) is:
Displacement from A to B is 6 km west.
What defines a scalar quantity?
A scalar quantity is defined by magnitude and unit.
Which of these is a vector quantity?
Momentum is a vector quantity.
What does the arrow in a vector diagram represent?
The arrow in a vector diagram represents direction.
Which example is a scalar quantity?
Speed is a scalar quantity.
For a complete description, vectors require:
For a complete description, vectors require magnitude, unit, and direction.
Which physical quantity is *not* a vector?
Temperature is not a vector quantity.
How is a vector represented graphically?
A vector is represented graphically as a directed line segment with length and arrow.
What does the gradient of a distance-time graph represent?
The gradient of a distance-time graph represents speed.
A straight line on a distance-time graph indicates:
A straight line on a distance-time graph indicates uniform speed.
What does a horizontal line on a distance-time graph signify?
A horizontal line on a distance-time graph signifies that the object is stationary.
The gradient of a speed-time graph gives:
The gradient of a speed-time graph gives acceleration.
How is distance calculated from a speed-time graph?
Distance is calculated from a speed-time graph as the area under the graph.
A bus's distance-time graph has a gradient of 20/4. What is its speed?
The speed of the bus is 5 m/s.
A bus travels at 20 m/s for 5 seconds. What distance is covered?
The distance covered by the bus is 100 m.
A speed-time graph shows a triangle with base 5s and height 30 m/s. What is the distance?
The distance is 75 m.
A negative gradient on a speed-time graph indicates:
A negative gradient on a speed-time graph indicates deceleration.
A curved line on a distance-time graph implies:
A curved line on a distance-time graph implies non-uniform speed.
Which equation represents the first equation of motion?
The first equation of motion is \( v_f = v_i + at \).
The third equation of motion establishes a relationship between:
The third equation of motion establishes a relationship between acceleration and displacement.
A car accelerates from rest at 5 m/s². What distance does it cover in 4 seconds?
The car covers a distance of 40 m.
What does "a" stand for in the equations of motion?
"a" stands for uniform acceleration in the equations of motion.
The third equation of motion is derived by:
The third equation of motion is derived by squaring the first equation and substituting from the second.
Average velocity in the second equation of motion is expressed as:
Average velocity in the second equation of motion is expressed as \( v_i + \frac{1}{2} a t \).
The formula for average acceleration is:
The formula for average acceleration is \( a = \frac{v_f - v_i}{t} \).
Which equation would you use to calculate final velocity if time is unknown?
You would use the third equation to calculate final velocity if time is unknown.
A motorcycle moving at 30 m/s accelerates at 6 m/s² for 5 seconds. What is its final velocity?
The final velocity of the motorcycle is 60 m/s.
In the equation \( v_f^2 = v_i^2 + 2aS \), what does "S" represent?
"S" represents displacement in the equation \( v_f^2 = v_i^2 + 2aS \).
Who experimentally proved that all objects fall at the same acceleration regardless of mass?
Galileo experimentally proved that all objects fall at the same acceleration regardless of mass.
In a vacuum, a feather and a stone dropped together will:
In a vacuum, a feather and a stone dropped together will land simultaneously.
What is the approximate value of acceleration due to gravity (g) used for calculations?
The approximate value of acceleration due to gravity (g) used for calculations is 10 m/s².
According to the text, when is gravitational acceleration (g) considered negative?
Gravitational acceleration (g) is considered negative when the object is moving downward.
Which equation is correct for motion under gravity as per the text?
The correct equation for motion under gravity is \( 2gh = v^2 - u^2 \).
Why does a stone fall faster than a feather in air?
A stone falls faster than a feather in air due to less air resistance.
Whose theory did Galileo disprove about falling objects?
Galileo disproved Aristotle's theory about falling objects.
In gravity equations, what symbol replaces distance (S)?
In gravity equations, the symbol \( h \) replaces distance (S).
Air resistance primarily affects which aspect of falling objects?
Air resistance primarily affects the acceleration of falling objects.
If an object is thrown upward, how is 'g' treated in calculations as per the text?
If an object is thrown upward, 'g' is treated as positive in calculations.