Tag: along with motion

Questions Related to along with motion

The motion in which all points of a moving body move uniformly in the same line or direction is known as 
  1. Rolling

  2. Rotatory

  3. Both A and B

  4. Translational


Correct Option: D
Explanation:
If a body rotates its motion its rotatory. Rolling motion is combination of rotation and translation motion.
Only in translational motion body moves along a straight line, that means body doesn't rotate then its motion is translational.

Which type of motion of an object that moves at a fixed distance from a fixed point?

  1. Periodic motion

  2. Rectilinear motion

  3. Circular motion

  4. None of the above


Correct Option: C
Explanation:

Circular motion is the motion of an object that moves at a fixed distance from a fixed point. Here all objects rotate in circular motion.

If an object moves along a straight path it is said to be ____ or ____ motion. Fill in the blank.

  1. Linear

  2. one dimensional

  3. two dimensional

  4. both A and B


Correct Option: D
Explanation:

Linear motion (also called rectilinear motion) is one dimensional motion along straight line.

Which of the following is a type of motion?

  1. Circular

  2. Rectilinear

  3. Periodic

  4. All of the above


Correct Option: D
Explanation:
'A body is said to be in motion, if it changes its position with respect to its surrounding.'
Example;-Circular motion;"The motion of an object in a circular path is known as circular motion"
Linear motion-"(also called rectilinear motion) is one dimensional motion along straight line"
Periodic motion-Motion repeated in equal intervals of time

What is corrct statement about impulse?

  1. change in velocity

  2. change in momentum due to force in small time

  3. change in acceleration

  4. change in speed


Correct Option: B
Explanation:

Impulse:- It is defined as a change in momentum due to force in small time.

Mathematically, 
From Newton's law,
$F=\dfrac{\Delta p}{\Delta t}$
Impulse, $I=F\times \Delta t=\Delta P$
The correct option is B.

A train of length 200 m traveling at $30 { ms }^{ -1 }$ overtakes another train of length 300 m traveling at $20 { ms }^{ -1 }$. The time taken by the first train to pass the second is 

  1. 10 s

  2. 30 s

  3. 40 s

  4. 50 s


Correct Option: D

 A person in a car tends to fall back when it suddenly starts. It is due to

  1. Inertia of rest

  2. Inertia of motion

  3. Inertia of direction

  4. none


Correct Option: A
Explanation:

when bus suddenly start moving in forward direction. This happens due to. When a bus suddenly starts, the standing passengers fall backward in the bus.

It is due to inertia of rest.
Hence,

option $A$ is correct answer.

The wall of your classroom is in a state of -

  1. motion

  2. rest

  3. neither rest nor motion

  4. none of these


Correct Option: B
Explanation:

The walls are at rest with respect to the Earth. When you are sitting in the classroom, you are also at rest with respect to the Earth, and so the walls do not seem to be moving to you.

If the forces acting on an object are balanced, then_____

  1. the object will be in equilibrium

  2. the object will be in motion

  3. the object will have zero acceleration

  4. the object loses its shape


Correct Option: A,C
Explanation:

according to newton's first law of motion, an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

so if forces acting on the object is balanced then the object will be in equilibrium and it will not have any acceleration.
cannot comment about option B because if initially object is at rest then it will be always at rest .
so best possible answer are option A,C.

If $\vec {u}=a \hat {i}+b \hat {j}+ c \hat {k}$ with $\hat {i},\hat {j},\hat {k}$ are in east, north and vertical directions, the maximum height of the projectile is ?

  1. $\dfrac{a^{2}}{2g}$

  2. $\dfrac{b^{2}}{2g}$

  3. $\dfrac{c^{2}}{2g}$

  4. $\dfrac{b^{2} c^{2}}{2g}$


Correct Option: C