NEET Motion in a Straight Line PYQ practice sheet

11 previous-year NEET Physics questions from Motion in a Straight Line, newest papers first. Motion in a Straight Line carries 13 of the Physics questions in NEET 2020 to 2026, so this is a good place to test yourself after revising the chapter. Marking: +4 correct, −1 wrong.

1. 1.

   RE-NEET 2026

   Consider a particle moving along a straight line, whose position as a function of time is given by $s(t) = \alpha t^2 - \beta t + \gamma$, where $\alpha = 1\ \mathrm{ms^{-2}}$, $\beta = 6\ \mathrm{ms^{-1}}$ and $\gamma = 5\ \mathrm{m}$. The average speed of the particle, in $\mathrm{ms^{-1}}$ from $t = 0$ to $t = 6$ s is:

   • (A)
     $6$
   • (B)
     $12$
   • (C)
     $3$
   • (D)
     $0$
2. 2.

   NEET 2026

   The following plots show variation of velocity ($v$) with time ($t$) of a ball thrown vertically upward, and falling back. Which of the following plots is/are correct? Plot A: $v$ falls linearly to zero and then rises linearly again (always positive). Plot B: $v$ rises linearly and then falls to zero. Plot C: $v$ decreases linearly from a positive value, crosses zero and becomes negative. Plot D: $v$ increases linearly from a negative value to a positive value. Plot E: $v$ falls along a curve to zero and then rises again along a curve.

   • (A)
     A and E only
   • (B)
     D only
   • (C)
     C only
   • (D)
     B only
3. 3.

   NEET 2026

   When a ruler falls vertically, 5 different persons catch it with different reaction times. ($g=9.8\ \text{m s}^{-2}$) A. Person A has reaction time of 0.20 s. B. Person B has reaction time of 0.22 s. C. Person C has reaction time of 0.18 s. D. Person D has reaction time of 0.19 s. E. Person E has reaction time of 0.21 s. What is the correct order of the distance travelled by the ruler for each person?

   • (A)
     B > E > A > D > C
   • (B)
     C > D > A > B > E
   • (C)
     C > D > A > E > B
   • (D)
     B > E > A > C > D
4. 4.

   NEET 2024

   The velocity ($v$)-time ($t$) plot of the motion of a body is shown below: The graph rises linearly from zero, stays constant for some time, and then falls linearly back to zero. The acceleration ($a$)-time ($t$) graph that best suits this motion is:

   • (A)
     
   • (B)
     
   • (C)
     
   • (D)
     
5. 5.

   NEET 2023

   A vehicle travels half the distance with speed $\vartheta$ and the remaining distance with speed $2\vartheta$. Its average speed is:

   • (A)
     $\dfrac{3\vartheta}{4}$
   • (B)
     $\dfrac{\vartheta}{3}$
   • (C)
     $\dfrac{2\vartheta}{3}$
   • (D)
     $\dfrac{4\vartheta}{3}$
6. 6.

   NEET 2023

   A horizontal bridge is built across a river. A student standing on the bridge throws a small ball vertically upwards with a velocity $4\ \mathrm{m\,s^{-1}}$. The ball strikes the water surface after $4\ \mathrm{s}$. The height of bridge above water surface is (Take $g = 10\ \mathrm{m\,s^{-2}}$) :

   • (A)
     68 m
   • (B)
     56 m
   • (C)
     60 m
   • (D)
     64 m
7. 7.

   NEET 2023

   A bullet from a gun is fired on a rectangular wooden block with velocity $u$. When bullet travels $24\ \mathrm{cm}$ through the block along its length horizontally, velocity of bullet becomes $\dfrac{u}{3}$. Then it further penetrates into the block in the same direction before coming to rest exactly at the other end of the block. The total length of the block is :

   • (A)
     30 cm
   • (B)
     27 cm
   • (C)
     24 cm
   • (D)
     28 cm
8. 8.

   NEET 2022

   The ratio of the distances travelled by a freely falling body in the 1st, 2nd, 3rd and 4th second is:

   • (A)
     1 : 1 : 1 : 1
   • (B)
     1 : 2 : 3 : 4
   • (C)
     1 : 4 : 9 : 16
   • (D)
     1 : 3 : 5 : 7
9. 9.

   NEET 2022

   The displacement-time graphs of two moving particles make angles of $30^{\circ}$ and $45^{\circ}$ with the $x$-axis as shown in the figure. The ratio of their respective velocities is:

   • (A)
     $1:\sqrt3$
   • (B)
     $\sqrt3:1$
   • (C)
     $1:1$
   • (D)
     $1:2$
10. 10.

    NEET 2021

    A small block slides down on a smooth inclined plane, starting from rest at time $t = 0$. Let $S_n$ be the distance travelled by the block in the interval $t = n-1$ to $t = n$. Then, the ratio $\dfrac{S_n}{S_{n+1}}$ is :

    • (A)
      $\dfrac{2n+1}{2n-1}$
    • (B)
      $\dfrac{2n-1}{2n}$
    • (C)
      $\dfrac{2n}{2n-1}$
    • (D)
      $\dfrac{2n-1}{2n+1}$
11. 11.

    NEET 2020

    A ball is thrown vertically downward with a velocity of $20$ m/s from the top of a tower. It hits the ground after some time with a velocity of $80$ m/s. The height of the tower is : ($g = 10$ m/s$^2$)

    • (A)
      360 m
    • (B)
      340 m
    • (C)
      320 m
    • (D)
      300 m