Question

If a body is projected with certain velocity making an angle ${30}^{\circ }$ with the horizontal, then

• A. its horizontal velocity remains constant
• B. its vertical velocity changes
• C. on falling to the ground its vertical displacement is zero.
• D. All of the above

Answer 1

Answer: (D)

All of the above

Since there is no force acting in the horizontal direction , the horizontal velocity of the ball remains same.
Gravitational force acts in the vertical direction. So there is a change in the vertical velocity of the ball.
Vertical displacement is $=h_f-h_i=0-0=0$