John took 45 minutes to bicycle to his grandmother's house, a total of 4 kilometers. what was his velocity in km/hr?

What is a possible result of higher air temperature caused by global warming

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?