## Kinematics – MCQ’s

**Study of motion of the bodies is known as:**

**(a)** Heat

**(b)** Light

**(c)** Atomic physics

**(d)** Mechanics ✓

**Study of motion without discussing the cause of motion is called:**

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**(a)**Kinematics ✓

**(b)** Dynamics

**(c)** Heat

**(d)** Motion

**If a body does not change its position with respect to some observer then it will be in a state of:**

**(a)** Rest ✓

**(b)** Motion

**(c)** Uniform motion

**(d)** Relative motion

**If a body changes its position with respect to some observer then it will be in state of:**

**(a)** Rest

**(b)** Motion ✓

**(c)** Uniform motion

**(d)** Relative motion

**Rest and motion are ————– states:**

**(a)** Absolute

**(b)** Constant

**(c)** Variable

**(d)** Relative ✓

**Which one of the following is a vector quantity?**

**(a)** Displacement ✓

**(b)** Speed

**(c)** Volume

**(d)** Work

**The spinning motion of a body about its axis is known as. (LHR 2015)**

**(a)** Translatory motion

**(b)** Vibratory motion

**(c)** Rotatory motion ✓

**(d)** none of these

**When a body moves to and fro about a point and repeats its motion again and again about the same point then this motion is known as: (GRW 2014, 2015)**

**(a)** Translatory

**(b)** Vibratory ✓

**(c)** Rotatory

**(d)** none of these

**The motion of the string of a violin is:**

**(a)** Translatory

**(b)** Vibratory ✓

**(c)** Rotatory

**(d)** none of these

**Total length of a path between two points is known as:**

**(a)** Velocity

**(b)** Acceleration

**(c)** Speed

**(d)** Distance ✓

**The shortest distance between two points is known as:**

**(a)** Velocity

**(b)** Displacement ✓

**(c)** Speed

**(d)** Distance

**The area uner a speed time graph respresents**

**(a)** Speed

**(b)** Volume

**(c)** Acceleration

**(d)** Distance ✓

**SI unit of speed is:**

**(a)** ms^{-1} ✓

**(b)** mh^{-1}

**(c)** kms^{-1}

**(d)** All of these

**Speed is a ————- quantity:**

**(a)** Vector

**(b)** Scalar ✓

**(c)** Both

**(d)** none of these

**If a body covers equal distance in equal intervals of time, however small the intervals may be, then the speed of the body is known as:**

**(a)** Uniform ✓

**(b)** Variable

**(c)** Non uniform

**(d)** All of these

**The rate of displacement with respect to time is known as:**

**(a)** Distance

**(b)** Speed

**(c)** Velocity ✓

**(d)** Acceleration

**If the speed and direction of the moving body does not change with time then its velocity is said to be:**

**(a)** Uniform ✓

**(b)** Variable

**(c)** Constant

**(d)** All of these

**If the speed or direction of the moving body changes with time then its velocity is said to be:**

**(a)** Uniform

**(b)** Variable ✓

**(c)** Constant

**(d)** All of these

**Rate of change of velocity is known as:**

**(a)** Distance

**(b)** Speed

**(c)** Velocity

**(d)** Acceleration ✓

**If the velocity of the body is increasing then its acceleration will be:**

**(a)** Positive ✓

**(b)** Negative

**(c)** Uniform

**(d)** Variable

**If the velocity of the body is decreasing then its acceleration will be:**

**(a)** Positive

**(b)** Negative ✓

**(c)** Uniform

**(d)** Variable

**If the velocity of a body is uniform then its acceleration will be:**

**(a)** Positive

**(b)** Negative

**(c)** Zero ✓

**(d)** Doubled

**SI unit of acceleration is:**

**(a)** ms^{-1}

**(b)** kmh^{-1}

**(c)** kms^{-2}

**(d)** ms^{-2}✓

**If velocity of a body changes equally in equal intervals of time then its acceleration will be:**

**(a)** Uniform ✓

**(b)** Variable

**(c)** Constant

**(d)** Relative

**The velocity and acceleration of a body moving with uniform speed in a circular path will be:**

**(a)** In the same direction

**(b)** In the opposite direction

**(c)** Mutually perpendicular ✓

**(d)** Equal

**The direction of motion of body and acceleration is in same direction then acceleration will be:**

**(a)** Uniform

**(b)** Positive ✓

**(c)** Negative

**(d)** Zero

**The direction of motion of body and acceleration is in opposite direction then acceleration will be:**

**(a)** Uniform

**(b)** Positive

**(c)** Negative ✓

**(d)** Zero

**The quantity which can be described by a number, with suitable unit only is called:**

**(a)** Vector

**(b)** Scalar ✓

**(c)** Speed

**(d)** Acceleration

**The quantity which are described by magnitude as well as direction is called:**

**(a)** Vector ✓

**(b)** Scalar

**(c)** Speed

**(d)** Acceleration

**In equations of motion, motion will always be taken along ———- line:**

**(a)** Circular

**(b)** Straight ✓

**(c)** Elliptical

**(d)** None of above

**In equations of motion, Acceleration will always be:**

**(a)** Uniform ✓

**(b)** Variable

**(c)** Positive

**(d)** Negative

**In equations of motion, initial velocity will be taken as:**

**(a)** Uniform

**(b)** Variable

**(c)** Positive ✓

**(d)** Negative

**In equations of motion, quantities in the direction of initial velocity are taken as:**

**(a)** Uniform

**(b)** Variable

**(c)** Positive ✓

**(d)** Negative

**In equations of motion, quantities opposite to the direction of initial velocity are taken as:**

**(a)** Uniform

**(b)** Variable

**(c)** Positive

**(d)** Negative ✓

**The slope of straight line in speed time graph gives the magnitude of**

**(a)** Force

**(b)** Displacement

**(c)** Torque

**(d)** Acceleration ✓

**Series of experiments on free fall of heavy bodies was performed by:**

**(a)** Newton

**(b)** Einstein

**(c)** Galileo ✓

**(d)** Al-Kundi

**When a body is falling freely under the gravity then in equations of motion ‘a’ is replaced by:**

**(a)** m

**(b)** d

**(c)** S

**(d)** g ✓

**If a body is falling under the gravity then its initial velocity will be:**

**(a)** Positive

**(b)** Negative

**(c)** uniform

**(d)** Zero ✓

**If a body is falling under the gravity then its gravitational acceleration will be:**

**(a)** Positive ✓

**(b)** Negative

**(c)** Increasing

**(d)** Zero

**If a body is thrown vertically upward then its final velocity will be:**

**(a)** Positive

**(b)** Negative

**(c)** uniform

**(d)** Zero ✓

**If a body is thrown upward, then its gravitational acceleration will be:**

**(a)** Positive

**(b)** Negative ✓

**(c)** Increasing

**(d)** Zero

**A ball is dropped from the top of the tower. The distance covered by it in the first second is:**

**(a)** 100m

**(b)** 10m

**(c)** 50m

**(d)** 5m ✓

**If a car is moving with uniform speed in a circle then its velocity will be:**

**(a)** Uniform

**(b)** Variable ✓

**(c)** Zero

**(d)** None of the above

**There are ————– equations of motion which are used to solve the problems about the motion of bodies:**

**(a)** 1

**(b)** 2

**(c)** 3 ✓

**(d)** 4

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