thrown ball, physics help?

[Curtis]

You are traveling 76 km/h and you throw a
ball 38 km/h with respect to yourself.
What is the ball’s apparent speed to a friend
standing by the road when the ball is thrown
straight ahead? Answer in units of km/h.

What is the ball’s apparent speed to the same
friend when the ball is thrown sideways? An-
swer in units of km/h.

What is the ball’s apparent speed to the same friend when the ball is thrown backwards?
Answer in units of km/h.

 

[C.J. Burton]

1. 114 km/h
2. 76 km/h
3. 38 km/h

I believe these are correct.

-C.J. Burton

 

[Zach D]

i would check these, but i want to say

(1) 114 km/h
(2) 76 km/h
(3) 38 km/h