A 240-kg snowmobile travels at 16 m/s. The mass of the driver is 75 kg. What is the momentum of the snowmobile and driver?

Use the formula for momentum to find the momentum of each ball before and after the collision. Assume the mass of each ball is $0.4 \mathrm{~kg}$.

Suppose you are gathering information about visitors to Yosemite National Park. You survey every tenth person entering the park. Would you get a random sample of visitors? Explain.

Calculate the expected counts for a test of the hypotheses stated in the exercise earlier where the Yellowstone National Park staff surveyed a random sample of 1526 winter visitors to the park. They asked each person whether they belonged to an environmental club (like the Sierra Club). Respondents were also asked whether they owned, rented, or had never used a snowmobile. Is there an association between club membership and snowmobile use? The two-way table summarizes the data.

$$\begin{array}{l|c|r|r} & \text { No } & \text { Yes } & \text { Total } \\ \hline \text { Never used } & 445 & 212 & 657 \\ \hline \begin{array}{l} \text { Snowmobile } \\ \text { renter } \end{array} & 497 & 77 & 574 \\ \hline \begin{array}{l} \text { Snowmobile } \\ \text { owner } \end{array} & 279 & 16 & 295 \\ \hline \text { Total } & 1221 & 305 & 1526 \end{array}$$

Yellowstone National Park staff surveyed a random sample of 1526 winter visitors to the park. They asked each person whether they belonged to an environmental club (like the Sierra Club). Respondents were also asked whether they owned, rented, or had never used a snowmobile. Is there an association between club membership and snowmobile use? The two-way table summarizes the data.

$$\begin{array}{l|c|r|r} & \text { No } & \text { Yes } & \text { Total } \\ \hline \text { Never used } & 445 & 212 & 657 \\ \hline \begin{array}{l} \text { Snowmobile } \\ \text { renter } \end{array} & 497 & 77 & 574 \\ \hline \begin{array}{l} \text { Snowmobile } \\ \text { owner } \end{array} & 279 & 16 & 295 \\ \hline \text { Total } & 1221 & 305 & 1526 \end{array}$$

State hypotheses for a test about the relationship between club membership and snowmobile use in the population of winter visitors to Yellowstone.

Yellowstone National Park staff surveyed a random sample of 1526 winter visitors to the park. They asked each person whether they belonged to an environmental club (like the Sierra Club). Respondents were also asked whether they owned, rented, or had never used a snowmobile. Is there an association between club membership and snowmobile use? The two-way table summarizes the data.

$$\begin{array}{l|c|r|r} & \text { No } & \text { Yes } & \text { Total } \\ \hline \text { Never used } & 445 & 212 & 657 \\ \hline \begin{array}{l} \text { Snowmobile } \\ \text { renter } \end{array} & 497 & 77 & 574 \\ \hline \begin{array}{l} \text { Snowmobile } \\ \text { owner } \end{array} & 279 & 16 & 295 \\ \hline \text { Total } & 1221 & 305 & 1526 \end{array}$$

Make a segmented bar chart to show the relationship between club membership and snowmobile use in the sample.

Draw a diagram showing the motion of a satellite around Earth. Draw the force vectors acting on the satellite. Is the satellite accelerating?

Which herbs do you think made the best herb butters? Why?

Draw a diagram showing the motion of a satellite around Earth. Label the forces acting on the satellite. Is the satellite accelerating?

Look at the diagram below of two students pulling a bag of volleyball equipment. The friction force between the bag and the floor is $15 \mathrm{~N}$. What is the net force acting on the bag? What is the acceleration of the bag?

Yellowstone National Park surveyed a random sample of 1526 winter visitors to the park. The survey asked each person if he or she owned, rented, or had never used a snowmobile. Respondents were also asked whether or not they belonged to an environmental organization (like the Sierra Club). The two-way table summarizes the survey responses.

$$\begin{array} {lc} & \text{Environmental club} \\ \text {Snowmobile use} & \begin{array}{l|c|r|r} & \text { No } & \text { Yes } & \text { Total } \\ \hline \text { Never used } & 445 & 212 & 657 \\ \hline \text { Snowmobile renter } & 497 & 77 & 574 \\ \hline \text { Snowmobile owner } & 279 & 16 & 295 \\ \hline \text { Total } & 1221 & 305 & 1526 \end{array} \\ \end{array}$$

Make a segmented bar chart to show the relationship between environmental club membership and snowmobile use for the members of the sample.

Which of the following is determined by the force of gravity? A weight, B momentum, C mass, D distance.

A 7.3-kg bowling ball accelerates at a rate of $3.7 \mathrm{m} / \mathrm{s}^{2}$. What forces acts on the bowling ball?

When you drop a golf ball to the pavement, it bounces up. Is a force needed to make it bounce up? If so, what exerts the force?