How much force is needed to accelerate an object of mass 90kg at a rate of 1.2 m/s2

50 g of ice at 0°c is dropped in a beaker containing 100 g of water at 0°c. what will be the contents of the beaker after 5 hours? assume that the room temperature is 0°c.

Explain to someone who knows nothing about fossils the study of invertebrate paleontology and how it scientists understand the history of the earth. be sure your explanation contains a minimum of two complete sentences.

Asher cycles 12 miles in 16 hours. what is his speed?