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A projectile is hurled into air from a p...

A projectile is hurled into air from a point on the horizontal ground at an angle with the vertical. If the air exerts a constat resistve force,

A

the path of projectile will be parabolec path

B

the time of ascent will be ewual to time of decent

C

the total energy of the projectile is not conserved

D

at the highest point, the velocity of projectile is horizontal

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The correct Answer is:
A, C, D
Since , the projectil has two component velocities i.e., a horizontal velocity which is costant without air friction and a vertical velocity which changes with air friction and graveiy pull, which changes with air friction and gravity pull, hence the path of projectile is a parabolic path.
Due to air friction, he energy spent by projectile against air friction is not conserved, so the total energy or projectile is not conserved.
At teh lighest point, the projectile has horizontal component velocity only.
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