Physics

Problem

Two towers

P

and

Q

are located

60\,\text{m}

apart horizontally.

P

50\,\text{m}

high and

Q

30\,\text{m}

high. A ball is thrown horizontally from the top of tower

P

with speed

25\,\text{m/s}

towards

Q

. Simultaneously, another ball is thrown from the top of tower

Q

towards

P

with horizontal speed

15\,\text{m/s}

. What is the minimum distance between the two balls during their motion?