The bush baby, a small African mammal, is a remarkable jumper. Although only about 8 inches long, it can jump, from a standing start, straight up to a height of over 7 feet! Use the particle model to draw a motion diagram for a bush baby's jump, from its start until it reaches its highest point.

A softball player slides into second base. Use the particle model to draw a motion diagram of the player from the time he begins to slide until he reaches the base. Number the dots in order, starting with zero.

A bush baby, an African primate, is capable of a remarkable vertical leap. The bush baby goes into a crouch and extends its legs, pushing upward for a distance of 0.16 m. After this upward acceleration, the bush baby leaves the ground and travels upward for 2.3 m. What is the acceleration during the pushing-off phase? Give your answer in $\mathrm{m} / \mathrm{s}^2$ and in $g$ 's.

A skydiver jumps out of an airplane. her speed steadily increases until she deploys her parachute, at which point her speed quickly decreases. She subsequently falls to earth at a constant rate, stopping when she lands on the ground. Draw a motion diagram, using the particle model, that shows her position at successive times and includes velocity vectors.

Estimate the average speed, in m/s, with which the hair on your head grows. Make this estimate from your own experience noting, for instance, how often you cut your hair and how much you trim. Express your result in scientific notation.

A car travels to the left at a steady speed for a few seconds, then brakes for a stop sign. Use the particle model to draw a motion diagram of the car for the entire motion described here. Number the dots in order, starting with zero.

Three displacement vectors have lengths $1 \mathrm{~m}, 2 \mathrm{~m}$, and $4 \mathrm{~m}$. Could they possibly add together to get a vector of length zero?

Weddell seals make holes in sea ice so that they can swim down to forage on the ocean floor below. Measurements for one seal showed that it dived straight down from such an opening, reaching a depth of 0.30 km in a time of 0.5 min. What was the speed of the diving seal?

A. 0.60 m\s

B. 6.0 m\s

C. 1.0 m\s

D. 10 m\s

The 2010 census showed that the percentage of Black Americans who did not finish high school was 15.8%. Did this figure decrease by 2013? Conduct a test to determine whether there is enough evidence to infer that the proportion of Black Americans who did not finish high school had decreased (RACE: 2 = Black/African American; EDCL 1 = No high school diploma).

A bush baby, an African primate, is 80 capable of a remarkable vertical leap. The bush baby goes into a crouch and extends its legs, pushing upward for a distance of $0.16 \mathrm{~m}$. After this upward acceleration, the bush baby leaves the ground and travels upward for $2.3 \mathrm{~m}$. What is the acceleration during the pushing-off phase? Give your answer in $\mathrm{m} / \mathrm{s}^2$ and in $g^{\prime}$ 's.

Your roommate drops a tennis ball from a third-story balcony. It hits the sidewalk and bounces as high as the second story. Draw a motion diagram, using the particle model, showing the ball's velocity vectors from the time it is released until it reaches the maximum height on its bounce.

If you make multiple measurements of your height, you are likely to find that the results vary by nearly half an inch in either direction due to measurement error and actual variations in height. You are slightly shorter in the evening, after gravity has compressed and reshaped your spine over the course of a day. One measurement of a man's height is 6 feet and 1 inch. Express his height in meters, using the appropriate number of significant figures.

Your friend Travis claims to have set the new world speed record for riding a unicycle. His top speed, he says, was $55 \mathrm{~m} / \mathrm{s}$. Do you believe him? Explain.

A car is driving north at a steady speed. It makes a gradual $90 ^ { \circ }$ left turn without losing speed, then continues driving to the west. Draw a motion diagram, using the particle model, showing the car's velocity vectors as seen from a helicopter hovering over the highway.