Explain why each element has a unique spectrum of absorption or emission lines.
1 answer:
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Angle of projection: 28 degrees or 62 degrees
Explanation:
A projectile consists of two independent motions:
- A uniform motion along the horizontal direction
- A uniformly accelerated motion along the vertical direction
From the equations of motion, it is possible to derive an expression for the range of a projectile, which is:
where:
u is the initial speed
is the angle of projection
is the acceleration due to gravity
For the projectile in this problem, we have:
d = 15 km = 15,000 m is the range
is the initial speed
Solving the equation for , we find the possible angle:
Which gives two values of the angle:
Learn more about projectile:
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