If we can ignore any effects of air resistance ... and we always do ... then it makes no difference what its horizontal speed was, or whether it had any at all. It hits the ground in the same time as an arrow that just dropped from the bow to ground.
The distance an object falls from rest in ' T ' seconds, on account of gravity, is
D = 1/2 G T² . ('G' is the acceleration of gravity, 9.8m/s² )
This arrow falls 1.5 meters,and 1/2 G is 9.8/2 = 4.9 m/s² .
1.5 m = 4.9 m/s² T²
Divide each side by 4.9 m/s² : (1.5 / 4.9) sec² = T²
Take the square root of each side: T = square root of (1.5/4.9) = 0.553 sec
To determine how long it takes for an arrow shot horizontally to hit the ground, we can ignore the horizontal motion since it does not affect the time of flight. The arrow's vertical motion is influenced by gravity alone. Using the equation for the time of fall under gravity, we have:
t = √(2h/g),
where:
t is the time in seconds,
h is the height in meters (1.5 m),
g is the acceleration due to gravity (approximately 9.8 m/s2).
Plugging in the values, we get:
t = √(2 × 1.5 m / 9.8 m/s2)
t = √(3 / 9.8)
t = √(0.30612244898)
t ≈ 0.5534 seconds (rounded to four decimal places)
Therefore, it takes approximately 0.55 seconds for the arrow to hit the ground.
The arrow takes approximately 0.553 seconds to hit the ground after being shot horizontally from a height of 1.5 meters. This time is calculated using the formula for the distance fallen under gravity. The horizontal speed does not affect the time it takes to hit the ground.
;
Jawaban:a. Jika saya berdebat atau bertengkar dengan teman, cara menyelesaikan masalah tersebut adalah dengan saling meminta maaf dan berbicara baik-baik untuk mencari jalan keluar bersama. Hal ini sesuai dengan nilai-nilai Pancasila, terutama sila kedua tentang kemanusiaan yang adil dan beradab, yang mengajarkan untuk saling menghargai, menghormati, dan menyelesaikan masalah dengan cara damai tanpa menyakiti pihak lain.b. Sila ketiga Pancasila, yaitu “Persatuan Indonesia”, berperan penting dalam membangun persatuan dan kesatuan bangsa. Dengan menjunjung tinggi rasa kebersamaan dan menghargai keberagaman suku, agama, budaya, serta adat istiadat, masyarakat Indonesia dapat bersatu dan bekerja sama untuk mencapai tujuan bersama demi kemajuan bangsa.c. Nilai-nilai Pancasila berperan dalam mewujudkan kehidupan yang damai dan sejahtera karena Pancasila menjadi pedoman dalam bersikap dan bertindak. Nilai ketuhanan, kemanusiaan, persatuan, kerakyatan, dan keadilan membantu masyarakat hidup rukun, menghargai hak dan kewajiban sesama, serta menciptakan kesejahteraan yang merata tanpa ada diskriminasi.