Respuesta :
					                   travelling energy = kinetic energy = half m v squared.
33750=(1/2)m 30^2
33750=15x30m
3375=15x3m
m=75kg
					                
					                
					             33750=(1/2)m 30^2
33750=15x30m
3375=15x3m
m=75kg
 
			                   
					                  