Projectile Motion

When an object is launched 30 degrees above the horizontal reaches its highest point, which of the following statements is true?

Which of the following statements is false?

Which of the following is not a vector quantity?

A rock is thrown upward at 50 degrees with respect to the horizontal. As it rises, its horizontal component of velocity

A hunter on level ground fires a bullet at an angle of 10 degrees above the horizontal while simultaneously dropping another bullet from the level of the rifle. Which bullet will hit the ground first?

A projectile is fired horizontally in a region of no air resistance. The projectile maintains its horizontal component of velocity because

A bullet fired horizontally over level ground hits the ground in 0.5 second. If it had been fired with twice the speed in the same direction, it would have hit the ground in

A rock is thrown upward at 50 degrees with respect to the horizontal. As it rises, its vertical component of velocity

A girl stood at first base on a level playing field and tossed a softball at angle of 15 degrees above the horizontal. It was caught by another player at home plate at the same height above the ground it was originally thrown. If the girl threw another ball at a higher angle and twice the original speed, what would be the vertical acceleration of the ball?

A girl stood at first base on a level playing field and tossed a softball at angle of 15 degrees above the horizontal. It was caught by another player at home plate at the same height above the ground it was originally thrown. At what point along its trajectory was the ball traveling the fastest?