Dear PF,(adsbygoogle = window.adsbygoogle || []).push({});

Hera is a problem I am trying to solve.

The evil Dr.X secretly leaves Space port L4 in a warship capable of traveling at an average speed of (v_av)_x.

Two hours later her escape is noticed and our hero blasts off after her at a speed that will effect rendezvous in 6.4 hours. Write an expression for his speed, (v_av)_H, in terms of hers, (v_av)x.

I assumed the place they meet is where L (the distance traveled) is equal for both then :

(1) (v_av)_x = L / (8.4)

(2) (v_av)_H = L / (6.4)

so (v_av)_H = 1.3(v_av)x

If I'm making a mistake please let me know.

I don't know why the writer of this book hasn't included

an answer section

Thanks

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Another kinematics easy problem

**Physics Forums | Science Articles, Homework Help, Discussion**