Would it be easier to push or pull a snow sleigh?
It depends on what you mean by 'easier'. It also depends on how you push or pull.
If by 'easier' you mean 'less work' to push or pull a snow sleigh the same distance using purely horizontal force, the answer is: the work is the same whether you push or pull.
In practice, pulling is less work because the pulling force is a little upward whereas the pushing force is usually horizontal or downward. This affects the normal force and the friction that the puller or pusher has to work against.
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