A fielder in a cricket match throws ball from the boundary line to the wicket keeper. The ball describes a parabolic path. Which of the following quantities remain constant during the motion in air? (Neglecting air resistance)

Question

A fielder in a cricket match throws ball from the boundary line to the wicket keeper. The ball describes a parabolic path. Which of the following quantities remain constant during the motion in air? (Neglecting air resistance) (A) Kinetic energy (B) Vertical component of velocity (C) Horizontal component of velocity (D) Speed

Tardigrade Admin · Accepted Answer

Since, acceleration due to gravity act along the vertical, so it has no component along the horizontal. Hence, horizontal motion is a non-accelerated motion with uniform velocity. So, ux= constant

Q. A fielder in a cricket match throws ball from the boundary line to the wicket keeper. The ball describes a parabolic path. Which of the following quantities remain constant during the motion in air? (Neglecting air resistance)

Kinetic energy

Vertical component of velocity

Horizontal component of velocity

Speed

Since, acceleration due to gravity act along the vertical, so it has no component along the horizontal. Hence, horizontal motion is a non-accelerated motion with uniform velocity.
So, $u_{x} =$ constant

Q. A fielder in a cricket match throws ball from the boundary line to the wicket keeper. The ball describes a parabolic path. Which of the following quantities remain constant during the motion in air? (Neglecting air resistance)

Kinetic energy

Vertical component of velocity

Horizontal component of velocity

Speed

Since, acceleration due to gravity act along the vertical, so it has no component along the horizontal. Hence, horizontal motion is a non-accelerated motion with uniform velocity. So, ux​= constant

Since, acceleration due to gravity act along the vertical, so it has no component along the horizontal. Hence, horizontal motion is a non-accelerated motion with uniform velocity.
So, $u_{x} =$ constant