Motion in One D...

The ratio between the distances travelled by a stone dropped from a certain height in its first two seconds and first three seconds is

The plot between displacements of a particle projected vertically upwards versus time is

A vehicle covers one half of the distance in 5 hours and other half in 7 hours. If the total distance is 360 km, the average speed of the vehicle is

A stone is projected with a speed of 15 m/s from a tower of height 50 m. The time taken by the stone to reach the ground is

An object starting from rest accelerates for 20 seconds at a rate of 2 m/s², maintains the speed for some time and decelerates at the rate of 1 m/s² to come to rest. If the total distance covered is 2000 m, the time duration during which the object travels with constant speed is

Three objects whose masses are in the ratio 1 : 2 : 3 are dropped from a certain height simultaneously. The ratio between their velocities with which they will hit the ground is

A cyclist cycles for t second at a speed of 3 m/s and then for the same time at a speed of 5 m/s along a straight road to North.What is the average speed of the cyclist?

A body starting from rest accelerates at 10 m/s². What is the distance travelled in the 3^rd second?

A car which is at rest starts accelerating at the rate of 2 m/s² when a motorcycle travelling with a constant speed of 54 kmph crosses it. The time at which the car will catch the motor cycle is