(adsbygoogle = window.adsbygoogle || []).push({}); [solved]Average force exerted on object by wall

Handball

A 301.0 g handball moving at a speed of 5.3 m/s strikes a wall at an angle of 29.0° to the normal of the wall and then bounces of with the same speed at the same angle. It is in contact with the wall for 0.002 s. What is the average force exerted by the ball on the wall?

m= 3.01kg

v int = 5.3 m/s

v final = -5.3 m/s

theta = 29 deg

time = 0.002s

quick pic i drew of how i set it up

2. Relevant equations

F avg = (Pfinal - P initial)/time

P = m*v

3. The attempt at a solution

P int = 3.01kg*5.3m/s = 15.953

P final = 3.01kg*-5.3m/s = -15.953

F avg = (-15.953-15.953)/0.002 = -15953 N Lon capa declined this answer is exceptionally large for a tenis ball so i tried to include the angle it gave us.

Pint = -2mvcos29=-27.906

Pfinal = 2mvsin29=15.468

(15.468-27.906)/.002 = -6218.64 which is wrong as well

next i tried (-5.3cos(29)-5.3cos(29)*3.01)/.002 = -9294 N

**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: Average force exerted on object by wall

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