Lacie kicks a football from ground level at a velocity of 13.9 m/s and at an angle of 25.0° to the ground. How long will the bal
l be in the air before it lands? Round your answer to the nearest tenth.
2 answers:
Answer: 1.2 seconds
Explanation:
Initial velocity =u=13.9m/s
Acceleration due to gravity=g=9.8m/s^2
Φ=25°
Time=t
T=(2 x u x sinΦ) ➗ g
T=(2 x 13.9 x sin25) ➗ 9.8
T=(2 x 13.9 x 0.4226) ➗ 9.8
T=11.75 ➗ 9.8
T=1.2 seconds
Answer:
1.2 seconds
Explanation:
If it takes t seconds to reach the max height, total time in the air is 2t seconds
v = u + at
0 = 13.9sin(25) - 9.8t
t = 0.5994279427
2t = 1.198855885
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