Assertion`:-` A ball is thrown from the edge of a very high clif. No matter what the angle at which it is thrown , due to air resistance, the ball will eventually end up moving vertically downward.
Reason `:-` In horizontal direction there is a component of retarding force of air resistance alone.

A ball is thrown vertically upwards. Which of the following plots represent the speed graph of the ball during its flight if the air resistence is not ignored?

A ball is thrown vertically upwards from the ground. If T_1 and T_2 are the respective time taken in going up and coming down, and the air resistance is not ignored, then

A : In the presence of air resistance, if the ball is thrown vertically upwards then time of ascent is less than the time of descent. R : Force due to air friction always acts opposite to the motion of the body.

Assertion:- A bowler throuws a ball such that it moves in air with constant angular velocity (Ignorning the air resistance) Reason:- Spin angular momentum of ball is independent of reference frame

A projectile of mass m is thrown with a velocity v making an angle 60^(@) with the horizontal. Neglecting air resistance , the change in momentum from the departure A to its arrival at B is

Assertion: When a body dropped from a height explodes in mid air, its center of mass keeps moving in vertically downward directions. Reason: Explosion occurs under internal forces only. External force is zero.

A ball is thrown vertically upwards. Which of the following plots represents the speed-time graph of the ball during its height if the air resistance is not ingnored ?

Three identical balls are thrown from the top of a building, all with the same initial speed. As shown in figure., the first ball is thrown horizontally, second above horizontal level, and third at an angle below the horizontal. Neglecting air resistance, rank the speeds of the balls at the instant each hits the ground.

A player throws a ball upwards with an initail speed of 129.4 ms^(-1) (a) What is the direction of acceleration during the upward motion of the ball ? (b) What are the velocity and accleration of the ball at the ighest point os its motion. ( c) Choose the =x 0 aand t= 0 be the loction and time at its highest point, vertically downward direction to be the positve direction of X-axis and give the signe of position, velocity and accelration of the ball during its upward, and downward motion. (d) To what hight does the ball rise and after how long does the ball returns to the plausr s hands. (Take g= 9.8 ms^(-23) and begleact air resistance)