You throw a ball into the air with an initial speed of 10...

You throw a ball into the air with an initial speed of 10 m/sm/s at an angle of 60 ∘∘ above the horizontal. The ball returns to the level from which it was thrown in the time TT. Choose the best explanation from among the following: Gravity causes the ball's speed to increase during its flight. The ball has zero speed at its highest point. The ball's speed decreases during its flight, but it doesn't go to zero.

You toss a ball into the air at an initial angle of 40° above the horizontal. At what point in the ball's trajectory does the ball have the smallest speed? (Neglect any effects due to air resistance). a) at the highest point in its flight b) just after it is tossed c) just before it hits the ground d) halfway between the ground and the highest point on the fall portion of the trajectory e) halfway between the ground and the highest point on the rise portion of the trajectory How will your answer to the previous question change if the initial angle is doubled, i.e., if the initial angle is 80°? a) It depends on the initial value of the component of the velocity in the y-direction. b) The answer will be the same, because at the highest point of the flight, the speed is always the smallest regardless of the launch angle. c) It depends on the initial value of the component of the velocity in the x-direction. Explain your reasoning:

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