JEE Main Physics: Kinematics Quiz Set 1

Going from city A to city B, a car accelerates uniformly from rest, then moves with constant velocity, and finally retards uniformly. If the ratio of time taken is 1:6:1 and the maximum speed is 80 km h^-1, Then what is the average speed over the journey?

A body is released from top of a tower of height X m. After 1 s, the body I stopped and then instantaneously released. What will be its height (from the ground) after next 2 s? (take g = 10 m/s²)

A body travels 80 m in first 2s and 100 m in the next 4s with deceleration. What will be the velocity of the body at the end of 5^th second? 

An object starts from rest and travels a distance 3D with uniform acceleration, then moves a distance 4D with uniform velocity and finally comes to rest after moving a distance of 5D under uniform retardation. What is the ratio of the average velocity to maximum velocity? 

An object is released from the top of a tower. Which of the following statement is correct about the time taken by the particle in falling through the successive distance of 1 m each? 

A passenger is standing on the platform. The passenger is standing at the beginning of the fourth coach of a train. How many coaches are there on the train if it takes 6 seconds by the fourth coach and 24 seconds by the rest of the train (including 4^th coach) to cross the passenger, then how many coaches are there in the train?  

An object starts sliding from the top of a triangular box with a base of 15 inches and a height of 8 inches. The Inclined height of the box is divided into three parts in such a way that the object takes equal times to slide down these parts. What will be the length of these parts?

A ball is released from the top of a tower. Another ball is released from a point ‘H₂’ meter below the top when the first ball has descended ‘H₁’ meter from the top. If booth ball are released from rest and reach the ground simultaneously then what is the height of the tower?

A heavy stone is dropped into a well in which the water level is at depth H below the ground level. If the speed of the sound is ‘v’ then the time after which the splash is heard will be given by

The height of a container is 1.5 m is being lifted up by a crane, with an acceleration of 2 m/s². One second after the start, a bolt from the roof of the container starts falling. What will be the displacement of the bolt before touching the floor of the container?