Which one of the following statements is not true about the motio… - Vidyadip

MCQ

Which one of the following statements is not true about the motion of a projectile?

A
The time of flight of a projectile is proportional to the speed with which it is projected at a given angle of projection
✓
The horizontal range of a projectile is proportional to the square root of the speed with which it is projected
C
For a given speed of projection, the angle of projection for maximum range is $45^{\circ}$
D
At maximum height, the acceleration due to gravity is perpendicular to the velocity of the projectile

✓

Answer

Correct option: B.

The horizontal range of a projectile is proportional to the square root of the speed with which it is projected

b
(b)

$R=\frac{u^2 \sin 2 \theta}{g} \Rightarrow R \propto u^2$

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