What is the average value g we get after we complete the data table? Values are: 10.29 m/s2 9.25 m/s2 8.68 m/s2

A woman stands at the edge of a cliff and throws a rock horizontally over the edge with a speed of v, = 19.5 m/s. The rock leaves her hand at a height of h = 49.0 m above level ground at the bottom of the cliff, as shown in the figure. Note the coordinate system in the figure, where the origin is at the bottom of the cliff, directly below where the rock leaves the hand. (a) What are the coordinates of the initial position of the rock? (Enter your answers in m.) m Yo = (b) What are the components of the initial velocity? (Enter your answers in m/s.) Vox = m/s Voy m/s

Q1

How many significant figures does each of the following numbers have?a. 6.21                 b. 62.1c. 0.620               d. 0.062

Page 3 of 8 4. Lin went ice-skating and tracked his distance using a motion detector. Calculate the rate of change by analyzing the differences in the y-values and the differences in the x-values in the table. Calculate the rate of change again using the graph of Lin's skate. Explain why your answers make sense. Skater's Distance from Motion D

Angle 1 3⁰ 2861 0 accel Sin(0) 141 Angle 2 50 ·73106 959 Angle 3 7.30 1.0945 .85 Angle 4 10° 1.7027 Angle 5 14° 22762 -.544.991 ****Graph the acceleration as a function of sin(0). Compute the slope and intercept of this data. Slope = Intercept = Calculate the percent error between your slope and g. On this same graph, sketch the curve a = gsin(0) and note the comparison.

A driver traveling north slows down from 35.4m / s to 0m / s in 8.6 seconds. What is the magnitude of the driver's acceleration? The standard units for acceleration are "meters per second-squared" or "meters per second per second" and it's written as m / (s ^ 2) or m / s / s

Joe and Max shake hands and say goodbye. Joe walks east 0.55 km to a coffee shop, and Max flags a cab and rides north 3.25 km to a bookstore. How far apart are their destinations?