A space-probe is to be launched from a small moon where the escape speed is

PHYSICS · Multi-part · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

50\,\text{m\!/s}

. Consider the following two probes: (i) Probe A has a mass of

2.0\,\text{kg}

and is launched at

0.60

times the escape speed. Calculate its kinetic energy at launch. (ii) Probe B is launched with a speed of

80\,\text{m\!/s}

and is required to have the same kinetic energy as Probe A. Determine the mass of Probe B that will satisfy this condition. (iii) If Probe B were instead launched at

0.80

times the escape speed while still needing to match the kinetic energy of Probe A, what would its mass have to be?

Related theory

Kinetic Energy
Linear momentum
Work Energy and Power
Kinetic energy and the work-energy theorem

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