C-02 — Motion

When is an object said to be at rest?

When is an object said to be in motion?

To specify the position of an object, what must be mentioned?

The reference point used to specify a position is —

You are sitting in a moving train and a person stands on the platform. According to the textbook, whose statement about your motion is correct?

If the reference point itself moves at a uniform velocity, then —

Why is it impossible to find an absolute rest reference point?

If a body moves along a straight line, its motion is called —

Which of the following is an example of linear motion?

When a body rotates around a particular point or line keeping the distance of its particles unchanged, the motion is called —

Which is given as a wonderful natural example of circular motion in the textbook?

In translational motion, every particle of the body —

The straight advancement of a car (ignoring the rotation of its wheels) is an example of —

Translational motion on a curved path is rare because —

If a moving object passes repeatedly through a definite point in the same direction in the same manner in a definite interval of time, the motion is called —

The time interval after which a periodic motion repeats itself is called its —

The vibrational motion of the human heart is an example of —

Consider the following examples of periodic motion:

Simple harmonic motion is a special type of —

In simple harmonic motion, the velocity of the particle is zero at —

In simple harmonic motion, the velocity of the particle is maximum at —

In SHM, the point about which the body oscillates on both sides is called the —

The motion of a pendulum of a clock is an example of —

When we speak, air molecules carry sound forward by which type of motion?

Anything that can be measured is called —

Which of the following is NOT a quantity in physics?

A quantity that can be expressed completely by a single number (magnitude only) is called —

A quantity that requires both magnitude and direction for complete specification is called —

Which of the following is a scalar quantity?

Which of the following is a vector quantity?

In printed books, vectors are written in —

When written by hand, a vector is denoted by —

Distance is a —

Displacement is a —

Displacement is defined as —

The dimension of distance and displacement is —

The relation between displacement vectors $\vec{AB}$ and $\vec{BA}$ is —

A cyclist rides 4 km along a curved path from A to B. The straight-line distance from A to B is 3 km. The displacement is —

Which of the following statements is correct?

From A you ride 6 km along a curved path to point C; the straight line AC is 1.5 km. Your displacement is —

Speed is defined as —

Velocity is defined as —

The dimension of speed/velocity is —

A body covers 100 m in 20 s. Its speed is —

If the change of position along a certain direction is 50 m in 20 s, the magnitude of velocity is —

Average speed is given by —

For uniform speed, instantaneous speed and average speed are —

In purely linear motion, the magnitude of velocity is —

A stone tied with a string is whirled around the head at a constant rate. Its motion is an example of —

If the whirling stone is suddenly released (assuming no air friction or gravity), it moves with —

A cyclist covers 4 km along a curved path in 20 minutes. The average speed is —

A cyclist's straight-line displacement is 3 km in 20 minutes. The magnitude of average velocity is —

Acceleration is defined as —

The dimension of acceleration is —

The SI unit of acceleration is —

When the magnitude of velocity decreases with time, the acceleration is called —

A stone tied with a string and rotated with uniform speed has acceleration because —

If initial velocity is $u$, final velocity $v$ after time $t$, then acceleration $a$ equals —

A car is increased from rest to 60 km/h in 60 s. Its acceleration is approximately —

A car moving at 60 mile/h stops in 5 minutes. The deceleration is approximately —

A famous example of uniform acceleration in nature is —

The value of acceleration due to gravity near the earth's surface is —

If an object has no acceleration, the distance covered in time $t$ is —

For uniform acceleration, the final velocity after time $t$ is —

The distance travelled by a uniformly accelerated body in time $t$ is —

The equation of motion which does NOT contain time $t$ is —

For a uniformly accelerated body, the average velocity over an interval equals —

The average velocity of a uniformly accelerated body over time $t$ starting with $u$ is —

If a body starts from rest with uniform acceleration $a$, its velocity after time $t$ is —

A bullet with velocity 1.5 km/s penetrates 10 cm of a wall before stopping. Its deceleration is —

To find the total distance covered by a body whose acceleration is NOT uniform, one needs —

In the equations of motion used in this chapter, time $t$ —

Galileo's first law of falling bodies states that —

Galileo's second law: the velocity acquired by a freely falling body from rest in time $t$ is —

Galileo's third law: the distance traversed by a freely falling body from rest in time $t$ is —

For a body falling from rest with initial velocity $u$, the velocity after time $t$ is —

The height fallen by a body in time $t$ from initial velocity $u$ is —

For a freely falling body, the relation between $v, u$ and height $h$ is —

Why do a stone and a piece of paper, released together, reach the ground at different times in real life?

In a vacuum tube, a feather and a stone released from the same height —

A pace bowler throws a cricket ball vertically upward with velocity 150 km/h ($\approx 41.67$ m/s). Approximately how high will it go (taking $g = 9.8 \, m/s^2$)?

Why does the equation $v^2 = u^2 - 2gh$ give wrong height when a cannon ball is fired at 10 km/s straight upwards?

From a distance–time graph, one can directly determine —

From a velocity–time graph, the rate of change of velocity gives —

If the velocity–time graph is a straight line (with non-zero slope), the acceleration is —

In the laboratory, an air track is used to —

From a distance-time data set giving 0, 1, 4 m at 0, 1, 2 s, the average velocity for the first second is —

In investigation 2.01 (marble on inclined plane), the slope is calculated as —

In the inclined plane experiment, the average speed is calculated as —

To estimate one second when no stop watch is available, you can —

In investigation 2.03 (vehicle speed), the speed is calculated as —

What is the unit of acceleration?

What type of motion do the hands of a clock have?

The distance traveled in a given time by a freely falling body from rest will be —

A body moves with a uniform acceleration starting from rest. Consider the following expressions for the distance travelled in time $t$:

Which of the velocity-time graphs represents a freely falling body (released from rest)?

Rajib's microbus has speedometer readings 18, 36, 54, 54, 54, 36, 18 km/h every 5 min. What is meant by instantaneous speed?

For an object moving with uniform velocity, the acceleration is —

For Rajib's microbus, the speed in the first 5 minutes was 18 km/h. The distance travelled in this interval is —

From the speedometer data 18, 36, 54, 54, 54, 36, 18 km/h every 5 min, in which intervals is the acceleration zero?

Translational motion is —

A bottle full of water and a piece of paper are dropped together from the fourth-floor verandah. Which hits the ground first and why?

A bus starts with uniform acceleration $0.05 \, m/s^2$. It travels $4.3 \, km - 300 \, m = 4000 \, m$ before the driver applies the brakes. How long after starting does the driver apply the brakes?

The bus reaches velocity $v = 0.05 \times 400 = 20 \, m/s$ when the brakes are applied and stops in 28 s. The braking distance and the fate of the cow (300 m ahead) are —

Which of the following best describes simple harmonic motion?

The statement "all motion in the universe is relative" means —

Why is acceleration called a vector quantity?

"The average speed of a car is 4 m/s" means —