NEET Physics Motion In A Straight Line MCQs

A body moves in a straight line for time $t_1$ with velocity $v_1$ and for time $t_2$ with velocity $v_2$ in the same direction. If the average velocity is equal to $(2v_1v_2)/(v_1+v_2)$, then the condition relating $t_1$ and $t_2$ is:

A stone is dropped from a cliff and takes 3 seconds to reach the ground. If the acceleration due to gravity is $10\ m/s^2$, what is the height of the cliff?

An object is projected vertically upwards with a speed 'u'. What is the time taken to reach the maximum height?

A ball is thrown vertically upwards from the ground with a speed 'u'. At what time after projection will the ball have the same speed but in the opposite direction? (Assume $g$ is the acceleration due to gravity)

A stone is dropped from a balloon rising vertically upwards with a velocity of $10\, m/s$. The stone reaches the ground in $6\, s$. What was the height of the balloon when the stone was dropped? (Take $g = 10\, m/s^2$)

A small block slides down a smooth inclined plane, starting from rest at time $t=0$. Let $S_n$ be the distance travelled by the block in the $n^{th}$ second of its motion. What is the ratio $\frac{S_n}{S_{n+1}}$?

A ball rolls down a smooth inclined plane, starting from rest. If it travels a distance $S_1$ in the first second and $S_2$ in the next second, what is the relationship between $S_1$ and $S_2$?

An object slides down a frictionless inclined plane. It covers distances $d_1$, $d_2$, and $d_3$ in the first, second, and third seconds of its motion, respectively. Which of the following is true?

A block starts sliding down a frictionless inclined plane from rest. What is the ratio of the distance it travels in the $2^{nd}$ second to the distance it travels in the $4^{th}$ second?

A smooth inclined plane is set up. A small object is released from rest at the top. If $S_n$ represents the distance travelled by the object during the $n^{th}$ second, which expression correctly represents $S_5$, the distance covered in the fifth second?