Match the  visual presentation of the hand to the characteristics described

The graph shown below represents the position of an object as a function of time.At which time is the object moving in the negative direction? 

Which of the following forces is a third law pair for the friction force the floor exerts on the toy?

Estimate the number of times the earth will rotate on its axis during a human’s lifetime.

Which of the following force diagrams correctly displays the forces acting on the toy in the vertical direction. 2 vectors of the same size, one pointing up and one down. Vector pointing down is longer than vector pointing up Vector pointing up is longer than vector pointing down 1 vector pointing up 1 vector pointing down No vectors

Determine the size of the frictional force the floor exerts on the toy.  Include units in your answer.

Describe three characteristics of the mammalian brain that differ from other vertebrates.

Describe three skeletal adaptations that allow for flight in birds.

What characteristics differentiate lizards and snakes?

Describe the hypothesized steps in the origin of eukaryotic cells.