PHYSICS · Subjective · A Level · Physics · Measurements and their errors · Measurements and their errors
Problem
A stone of mass 0.842kg is projected horizontally. In an experiment, it travels a measured distance of 12.35m in 0.55s. Using these data, answer the following:
(i) Calculate the speed of the stone.
(ii) Using the speed obtained in part (i), calculate the kinetic energy of the stone.
Express both answers with the correct number of significant figures.