We have a projectile launched upward with an initial horizontal velocity of

Question

20 m/s and an initial vertical velocity of 30 m/s.
1. What is the actual initial speed of the projectile?
2. What happens to the horizontal component of the velocity as the projectile flies through
the air?
3. What happens to the vertical component of the projectile as it flies through the air?
4. At the projectile’s maximum height, what is the horizontal component of its velocity?
5. At the projectile’s maximum height, what is the vertical component of its velocity?

Answer 1

1) sqrt (20^2 + 30^2)

2) no horizontal force so no change in horizontal speed

3) slows to zero at top then comes back to original speed but downward

4) Like we said in #2, it is the same until it hits the charging warthog.

5) it is at max height, no speed up any more and no speed down yet.

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