A base jumper leaps off a high cliff ledge.
As the base jumper descends, the decrease in their gravitational potential energy is 25.725 kJ25.725\text{ kJ}25.725 kJ. The mass of the base jumper (including equipment) is 75 kg75\text{ kg}75 kg. The gravitational field strength is 9.8 N/kg9.8\text{ N/kg}9.8 N/kg. Calculate the change in vertical height of the base jumper.
As the base jumper falls, their increase in kinetic energy is less than their decrease in gravitational potential energy. Explain why.
Different base jumpers have different speeds after falling the same vertical distance. Explain why.