Answer the following questions about lifting and carrying a suitcase:

PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

Answer the following questions about lifting and carrying a suitcase: (a) Calculate the work done in lifting a suitcase of mass

12\,\text{kg}

vertically through a height of

0.75\,\text{m}

. Take

g = 9.8\,\text{m/s}^2

. Give your answer to two significant figures. (b) The same suitcase is then carried horizontally for

10\,\text{m}

at the same height without any vertical movement. State the work done during this horizontal motion and justify your answer.