In projectile motion, the total flight time is _________.
- Aequal to the time required to reach the maximum height
- Bthrice the time required to reach the maximum height
- Cfour times the time required to reach the maximum height
- Dtwice the time required to reach the maximum height
Solution & Step-by-step Explanation
In symmetric projectile motion (neglecting air resistance), the time taken by the projectile to rise to its maximum height (time of ascent, t
a
=
g
usinθ
) is exactly equal to the time taken to descend back to the ground level (time of descent, t
d
=
g
usinθ
). Therefore, the total time of flight (T) is equal to t
a
+t
d
=2t
a
, which is exactly twice the time required to reach the maximum height.
a
=
g
usinθ
) is exactly equal to the time taken to descend back to the ground level (time of descent, t
d
=
g
usinθ
). Therefore, the total time of flight (T) is equal to t
a
+t
d
=2t
a
, which is exactly twice the time required to reach the maximum height.