A projectile is launched at an angle of 50 above the horizontal, flies through the air, and lands at the same height from which it was launched. A similar second projectile will be launched at the same speed, but is desired to land farther away from the launching point. How should it be aimed?

Question 7 options:

	at an angle of less than 30 above the horizontal
	at an angle of more than 50 but less than 90 above the horizontal
	at an angle of less than 50 but not less than 45 above the horizontal
	at any angle of less than 50 above the horizontal.

Question 8 (1 point)

A ball is thrown vertically downward from a window. Accelerating under gravity (9.8 m/s²), the ball hits the ground 2.6 s later with a speed of 20.0 m/s. From what height above the ground was it thrown?

Question 8 options:

	85 m
	29 m
	39 m
	19 m

Question 9 (1 point)

Which statement applies to projectile motion?

Question 9 options:

	The horizontal and vertical motions are dependent on one another.
	The vertical component of the acceleration is zero.
	The horizontal component of the acceleration is zero
	The horizontal acceleration is 9.80 m/s2.