Jake attempts a 36-yard field goal in a football game. For his attempt to be a success, the football needs to pass through the u
1 answer:
Question:
1) The kick is good! The ball passes about 10 feet above the crossbar.
2) The kick is good! The ball clears the crossbar by approximately 14 feet.
3) The kick is good! The ball clears the crossbar by about 4 feet.
4) The kick is not successful. The ball is 2 feet too low.
Answer:
The correct option is;
3) The kick is good! The ball clears the crossbar by about 4 feet.
Step-by-step explanation:
Here we have
Horizontal distance from goal, x = 36 yards = 108 ft
Vertical distance of goal, y = 10 ft
Angle of elevation of ball = 34°
Initial velocity of ball, v₀ = 68 ft/s
∴ Vertical component of velocity = = v₀×sin(θ₀)×t - g×t
Horizontal component of velocity = vₓ = 68×cos(34) = 56.375 ft/s
The equation for projectile motion is as follows
x = x₀ + v₀×cos(θ₀)×t
y = y₀ + v₀×sin(θ₀)×t - 1/2×g×t²
Where:
x₀ = Initial horizontal displacement of the ball = 0
y₀ = Initial vertical displacement of the ball = 0
t = Time of flight of the ball
Therefore;
108 = 0 + 68×cos(34)×t which gives;
t = 108/56.375 = 1.916 seconds
Hence, y = y₀ + v₀×sin(θ₀)×t - 1/2×g×t² gives;
y = 0 + 68×sin(34)×1.916 - 1/2×32.2×1.916²
y = 72.85 - 59.09 = 13.76 ft, hence the vertical location of the ball at 36 yard is 13.76 ft where the crossbar is at 10 ft hence the ball clears the crossbar by 13.76 ft - 10 ft = 3.76 ft ≈ 4 ft
Therefore, the kick is good! The ball clears the crossbar by about 4 feet.
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Answer:
The % students going to higher education is 79.60 % which is higher than the reported value.
Step-by-step explanation:
According to national study report the students going to college for higher education = 75 %
Given that
156 of their 196 graduates last year went on to college.
% students going to higher education is
Thus the % students going to higher education is 79.60 % which is higher than the reported value.