1. A 51-kg swimmer pushes on the pool wall and accelerates at 5 m/s2. The friction experienced by the swimmer is 64 N. What is the magnitude of the force that the swimmer applies on the wall?

2. You sit in a car that is moving at an average speed of 56.7 km/h. During the 3.0 s that you glance out the window, how far has the car traveled? (answer in meters)

3. What is the slope of a straight line graph of position vs. time?

a) Displacement

b) Velocity

c) Acceleration

d) Distance

4. Suppose a train is moving along a track. Is there a single, correct reference frame from which to describe the train's motion?

a) No, there is not a single, correct frame of reference because motion is independent of frame of reference.

b) No, there is not a single, correct frame of reference because motion is a relative term.

c) Yes, there is a single, correct frame of reference because motion is a relative term.

d) Yes, there is a single, correct frame of reference which is in terms of Earth's position.

5. A water balloon cannon is fired at 41.4 m/sat an angle of 19.5 degreesabove the horizontal. How far away will it fall?