A massive frog drops vertically from a tree branch onto a skateboard that moves horizontally below. When the frog lands, the skateboard slows, consistent with the conservation of momentum. The impulse that slows the skateboard is a) the friction force of the frog’s feet acting backward on the skateboard x time during which the speed changes. b) equal and opposite to the impulse that brings the frog up to speed c) Both of these d) Neither of these

he made 11 calls in one day

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

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