Answer:
300 ft
Step-by-step explanation:
The fox population in a certain region has an annual growth rate of 6% per year. In the year 2012, there were 24,900 foxes count
1 answer:
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Answer with Step-by-step explanation:
We are given that height of projectile after t seconds is given by
a.h(t)=144 ft
t-3=0
t=3
After 3 s, the height of the project will be 144 feet in the air.
b.h(t)=0
At t=0, the initial position of projectile
At t=6 s , the projectile will hit the ground.
(a) The projectile remains in the air for 10 seconds
(b) It travels a horizontal distance of 600 meters
Step-by-step explanation:
A projectile is fired at such an angle that
1. The vertical component of its velocity is 49 m/sec
2. The horizontal component of its velocity is 60 m/sec
We need to find:
(a) How long the projectile remains in the air
(b) The horizontal distance it travels
∵ The vertical distance y = t -
g t², where
is the vertical component of its velocity, g is the acceleration
of gravity and t is the time
∵ y = 0 ⇒ it return to the same initial height
∵ = 49 m/s
∵ g = 9.8 m/s²
- Substitute these values in the rule above
∴ 0 = 49 t - (9.8) t²
∴ 0 = 49 t - 4.9 t²
- Take t as a common factor
∴ 0 = t (49 - 4.9 t)
- Equate each term by 0
∴ t = 0 ⇒ at initial position
∴ 49 - 4.9 t = 0
- Add 4.9 t to both side
∴ 49 = 4.9 t
- Divide both sides by 4.9
∴ t = 10 seconds
(a) The projectile remains in the air for 10 seconds
∵ The horizontal distance = t, where
is the
horizontal component of its velocity
∵ = 60 m/sec
∵ t = 10 seconds
∴ x = 60 × 10 = 600 meters
(b) It travels a horizontal distance of 600 meters
Learn more:
You can learn more about the component of velocity in brainly.com/question/4464845
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We know that y=7x, so we just need tu put it into the 1st equation
So we found x. Now we can find y
Answer:
x=1, y=7; or (1;7)