MEDIUM
JEE Main
IMPORTANT
Earn 100

Six particles, situated on the corners of a regular hexagon of side a, move at a constant speed v. Each particle maintains a direction towards the particle at the next corner. Calculate the time the particles will take to meet each other.

Important Questions on Rest and Motion : Kinematics

EASY
JEE Main
IMPORTANT
Galileo was punished by the church for teaching that the sun is stationary and the earth revolves around it. His opponents held the view that the earth is stationary and the sun revolves around it. If the absolute motion has no meaning, are the two viewpoints not equally correct or equally wrong?
EASY
JEE Main
IMPORTANT
When a particle moves with a constant velocity, its average velocity, instantaneous velocity and speed are all equal. Comment on this statement.
EASY
JEE Main
IMPORTANT
A car travels at a speed of 60 km h-1 due north and the other at a speed of 60 km h-1 due east. Are the velocities equal? If no, which one is greater? If you find any of these questions irrelevant, explain.
EASY
JEE Main
IMPORTANT
A ball is thrown vertically upward with a speed of 20 m s-1. Draw a graph showing the velocity of the ball as a function of time, as it goes up and then comes back.
EASY
JEE Main
IMPORTANT
The velocity of a particle is towards the west at an instant. Its acceleration is not towards the west, nor is it towards the east or the north and neither is it towards the south. Give an example of this type of motion.
EASY
JEE Main
IMPORTANT
At which point on its path a projectile has the smallest speed?
MEDIUM
JEE Main
IMPORTANT
Two particles A and B start from rest and move for equal time on a straight line. The particle A has acceleration a for the first half of the total time and 2a for the second half. The particle B has acceleration 2a for the first and a for the second half. Which particle has covered a larger distance?
EASY
JEE Main
IMPORTANT
If a particle is accelerating, it is either speeding up or speeding down. Do you agree with this statement?