Question

A ball moving witk speed rebounce wirh speed and remains in contact with wall for 0.001 sec cal uts acceleration

Answer 1

the ball rebounds with speed but in opposite direction .

Hence , total change in momentum =mv-(-mv)=2mv=(2)(.01)(5)=0.1

from newton’s second law force=change in momentum per unit time.

force=2mv/0.01=0.1/0.01=10N ans.