Physics_50_Sample_Midterm_x1

# Physics_50_Sample_Midterm_x1 - Physics 50 Sample Midterm...

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(26 points) by Todd Sauke Question #1. A train starts from rest (at initial position = 0) and accelerates uniformly, until it has traveled 3.3 km and acquired a velocity of 48 m/s. The train then moves at a constant velocity of 48 m/s for 430 s. The train then decelerates uniformly at 0.065 m/s 2 until it is brought to a halt. We want to determine the acceleration during the first 3.3 km of travel. Fill in the table below with the values of the kinematic variables for the problem involving the first 3.3 km of travel. Write "target" in the table to indicate the target variable. | x | x 0 | v x | v 0x | a x | t | 1 point Write the constant-acceleration equation (from the study guide) involving the given kinematic variables and the target variable. _________________________________ 1 point Solve the equation for the target variable. (Make sure to use SI units consistently) acceleration= _______________ __________________ 1 point include units (½ point) How much farther does the train travel during the 430 s of constant velocity motion? __________________ ____________ 1 point (units) ½ point Now we want to determine the total distance traveled by the train once it has stopped moving. Fill in the table below with the values of the kinematic variables for the problem involving the final (decelerated) travel. Write "target" in the table to indicate the target variable. | x

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Physics_50_Sample_Midterm_x1 - Physics 50 Sample Midterm...

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