HELP PLEASE I WILL MARK YOU BRAINLIEST Jermias buys 6.5 pounds of ground beef at the grocery store. Ground beef costs $5.50 for
2 answers:
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Answer:
The 80 p0und bag will last 128 days.
Step-by-step explanation:
In order to find out how much days the 80 pound bag last we have to divide the 80 pounds by the among that the dog eats each day. And so we get.....
80 / =
=
=
= 128
Answer:
The correct option is;
The kick is good! The ball clears the crossbar by nearly 15 feet.
Step-by-step explanation:
Here we have;
Velocity of ball = 70 ft/s
Angle of motion = 50°
Therefore;
Vertical component of velocity, = v×sinθ = v×sin×50 = 53.62 ft/s
= u
- g·t
At maximum height = 0, therefore;
u = g·t and
t = u/g
Where:
u = Initial vertical velocity = 53.62 ft/s
g = Acceleration due to gravity = 32.1740 ft/s²
∴ t = 53.62/32.1740 = 1.66666 s
Total time of flight = 2 × 1.66666 = 3.33332 s
Max height is given by the following relation;
v² = u
² - 2·g·s
v = 0 ft/s at maximum height, therefore;
u² = 2·g·s
53.62² = 2×32.1740×s
s = 53.62² ÷(2×32.1740) = 44.69 ft
Horizontal velocity = 70×cos(50) = 44.995 ft/s
Hence the time it takes the ball to reach 42 yards is given by the following relation;
42 yards = 126 ft
Height of ball at 2.8 s is given by;
Direction of ball at 2.8 s = downwards
Hence time after peak = 2.8 - 1.666 = 1.1336429 s
Position at 2.8 s is given by
s = u ·t + 1/2·g·t²
u = 0 ft/s as ball is on second half of flight
∴ s = 1/2·g·t² = 1/2×32.1740×1.1336429²= 20.674 ft below maximum height
∴ Height above ground = Maximum height - 20.674 ft = 44.69 - 20.674
Height above ground = 24.01 ft
Hence the ball clears the crossbar by 24.01 - 10 = 14.01 ft
The best option is therefore;
The kick is good! The ball clears the crossbar by nearly 15 feet.