Motion in A Str...

A car is moving with a uniform speed on a level road. Inside the car there is a balloon filled with helium and attached to a piece of string tied to the floor. The string is observed to be vertical. The car now takes a left turn maintaining the speed on the level road. The balloon in the car will

Rewrite the sentence using proper alternative.
The total energy of an falling freely toward the ground ____

On another planet, a marble is released from rest at the top of a high cliff. It falls $$4.00 m$$ in the first $$1 s$$ of its motion. Through what additional distance does it fall in the next $$1 s$$?

An electron with a speed of $$3.00 \times 10^6 m/s$$ moves into
a uniform electric field of magnitude $$1.00 \times10^3 \,N/C$$. The field lines are parallel to the electrons velocity and pointing in the same direction as the velocity. How far does the electron travel before it is brought to rest?

A particle moves with a non zero initial velocity $${ v }_{ 0 }$$ and retardation $$kv$$, where $$v$$ is the velocity at any time $$t$$.

A body of mass m is dropped from a height of h. Simultaneously another body of mass 2m is thrown up vertically with such a velocity v that they collide at height $$\dfrac {h}{2}$$. If the collision is perfectly inelastic, the velocity of combined mass at the time of collision with the ground will be-

A particle is projected with a velocity $$u$$ in horizontal direction as shown in the figure. Find $$u$$(approx.) so that the particle collides orthogonally with the inclined  plane of the fixed wedge.

Mass $$A$$ is released from rest at the top of a frictionless inclined plane $$18 m$$ long and reaches the bottom $$3 s$$ later. At the instant when $$A$$ is released, a second mass $$B$$ is projected upwards along the plate from the bottom with a certain initial velocity. Mass $$B$$ travels a distance up the plane, stops and returns to the bottom so that it arrives simultaneously with $$A$$. The two masses do not collide. Initial velocity of $$B$$ is

The displacement of a particle moving in a straight line is given by $$x=16t-2t^{2}$$ (where, $$x$$ is in meters and $$t$$ is in second). The distance traveled by the particle in $$8$$ seconds [starting from $$t$$ $$=$$ 0] is

A water tap leaks such that water drops fall at regular intervals. Tap is fixed $$5\ m$$ above the ground. First drop reaches the ground and at that very instant third drop leaves the tap. At this instant the second drop is at a height of