KEfinal=PEinitial-frictionlosses
1/2 m v^2=mgh-0
solve for v
A body with a mass of 75 kg is located at a height of 20 m. If it is allowed to free fall to the ground. What will be its velocity on impact?
3 answers
1/2* 75kg* v^2= 75kg* 9.81* 20-0
37.5* v^2= 14715
37.5* v^2/ 37.5= 14715/37.5
v^2= 14715/37.5
v^2= 392.4 m/s
37.5* v^2= 14715
37.5* v^2/ 37.5= 14715/37.5
v^2= 14715/37.5
v^2= 392.4 m/s
a body with a mass of 75 kg is located at a height of 20 m.If it is allowed to fall freely to the ground.What will be its velocity on impact?
5 answers