The verb "to bounce" for ball is "tappa khana" ٹپہ کھانا The ball is bouncing = بال ٹپے کھا رہی ہے The ball crossed the boundary after bouncing once = ball tappa kha kar boundary line say bahir chali gai. "I bounced the ball off the wall" (active) is a bit complicated. It involves two actions (in urdu there is no single verb): You have to formulate it like that: I hit the ball on the wall (active) and the ball bounced back (passive). In Urdu: "men ne ball ko diwar per mara aur ball diwar se tappa kha kar (/takra ker) wapis aai"

Bounce in Urdu is "Chhalange" , or " Takra ker wapas aana " 1. Ball takra ker wapas aaie. 2. Meri ball deewar sey takra ker wapas aaie.