You measure the velocity of falling object at several times given in the table below. Time (s) Velocity (m/s) 0.00 0.08 0.10 1.05 0.20 2.05 0.30 3.03 0.40 3.84 0.50 4.98 0.60 5.78 0.70 6.88 0.80 7.84 0.90 8.73 1.00 9.89 The acceleration is the slope of the fit line. Use the Data Analysis ToolPak in Excel (or any other linear regression tool) to determine the acceleration and its uncertainty from the slope of the fit line and its standard error. O 19.71 t 0.07) m/s? O (9.81 : 0.07) m/s O0.70.1) m/s O 19.75 0.04) m/s? O 19.80 0.01) m/s
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- A ball at rest is dropped from a height of 32 meters. How long will it take for the ball to reach the ground? 6.5 s 2.6 s 1.3 s 3.3 sStarting at x = - 14 m at time t = 0 s, an object takes 17 s to travel 42 m in the +x direction at a constant velocity. On a sheet of paper, make a position vs. time graph of the object's motion. What is its velocityAt t=0 an object has a velocity of 35 m/s and a steady acceleration of -10 m/s2. Make a sketch of velocity vs. time for this motion from t=0 to t=5 s. Make a sketch of acceleration vs. time for this motion from t=0 to t=5 s. Does the object change directions between 0 and 6 s?
- an object has a velocity of (5.4 m/s)i - (5.8 m/s)j. over a period of 1.3 s, its velocity changes to (1.7 m/s)i + (5.9 m/s)j. What is the displacementAt t=0 an object has a position of 1 m and has a steady velocity of -2.5 m/s. What will be the object’s position at t = 6 seconds? Make a sketch of position vs. time for this motion from t=0 to t=6 s. Make a sketch of velocity vs. time for this motion from t=0 to t=6 s. Does the object change directions between 0 and 6 s?The figure shows the velocity-versus-time graph for a motorcycle moving along the x-axis. vx(m/s) 8 4 0 8 10 t(s) 02 4 6 What is the average acceleration of the motorcycle during the time interval t = 0 : t = 8 s measured in m/s².