Observe the picture and answer that it is PUSH or PULL., PUSH, PULL, Observe the picture and answer that it is PUSH or PULL., PUSH , PULL, Observe the picture and answer that it is PUSH or PULL., PUSH, PULL, Observe the picture and answer that it is PUSH or PULL., PUSH , PULL, holding a pencil, friction is useful , friction is problem, walking , friction is useful, friction is problem, wear and tear of shoes . , friction is useful, friction is problem, tying shoelaces. , friction is useful, friction is problem, A ----------------- is a PUSH or PULL., Force , Surface , walking , How much force showing in force meter?, 1N, 2N, 3N.

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