**1.**

The range:

$\overline{){\mathbf{R}}{\mathbf{=}}\frac{{{\mathbf{v}}_{\mathbf{0}}}^{\mathbf{2}}\mathbf{}\mathbf{sin}\mathbf{\left(}\mathbf{2}\mathbf{\theta}\mathbf{\right)}}{\mathbf{g}}}$

The range depends on the value of sin (2θ). The maximum value of sin (2θ) is obtained when θ = 45° and is 1.

1. Theoretically, the angle of projection for maximum range is 45 degree. does this set a limit on the range? Explain.

2. What effect does air resistance have on the range of the projectile?

3. What effect does the force of gravity have on the horizontal velocity of the projectile? Explain.

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