Part 10 of 11 - Determining Total Time of Flight As a challenge, Joey asks Meixiu how she can use v, = v, sin 0, - gt to find the total time of flight for the baseball. Which of Meixiu's responses is correct? ]"At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the time for the upward portion of the path, and double it to find the total time of flight." "At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the time for the upward portion of the path, and double it to find the total time of flight." "At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the total time of flight." "At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the total time of flight." Meixiu is correct. Following Joey's idea, Meixiu wrote 0 = v, sin e, - gt. Then she solved for t and got t = V; sin 0, Because the motion is symmetric, this is equal to the time for the baseball to return to its vertical starting position, so doubling this expression gives her an expression for the total time of flight: total 2v, sin 0, Part 11 of 11 - Analyze Meixiu and Joey used what they have learned to solve the following problem. A projectile is launched with a launch angle of 65° with respect to the horizontal direction and with initial speed 78 m/s. How long does it remain in flight?

Part 10 of 11 - Determining Total Time of Flight As a challenge, Joey asks Meixiu how she can use v, = v, sin 0, - gt to find the total time of flight for the baseball. Which of Meixiu's responses is correct? ]"At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the time for the upward portion of the path, and double it to find the total time of flight." "At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the time for the upward portion of the path, and double it to find the total time of flight." "At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the total time of flight." "At the top of the baseball path the vertical component of the velocity is zero, so I will set v, = 0. Then I can solve the equation for t, the total time of flight." Meixiu is correct. Following Joey's idea, Meixiu wrote 0 = v, sin e, - gt. Then she solved for t and got t = V; sin 0, Because the motion is symmetric, this is equal to the time for the baseball to return to its vertical starting position, so doubling this expression gives her an expression for the total time of flight: total 2v, sin 0, Part 11 of 11 - Analyze Meixiu and Joey used what they have learned to solve the following problem. A projectile is launched with a launch angle of 65° with respect to the horizontal direction and with initial speed 78 m/s. How long does it remain in flight?

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