PRE-LAB Instructions: Print out these pages. Feel free to refer to the lab instr

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PRE-LAB Instructions: Print out these pages. Feel free to refer to the lab instructions and other materials, your physics textbook, other students, etc. to help you to ponder, understand, and work out answers to the following question(s). Show your work& answers in the space(s) provided. PRE-LAB Questions A car is driven along a straight road. Its distance relative to a cross street is graphed at right: 1) draw CIRCLES around groups of points that indicate zero velocity for the Z car 2) draw PLUS symbols near points in groups that indicate a positive velocity. 3) draw MINUS symbols near points in groups that indicate a negative velocity.2 4) draw BOXES around groups of points that indicate either positive or negative acceleration for the car INCREASING TIME-

Explanation / Answer

8 ans

Given that

initial velocity uo=2.5 m/s

acceleration a=gsin(theta)

now we find the maximum distance at angle=20 degree

uo^2=2gsin(theta)*S

the maximum distance S=2.5^2/9.8*sin20*2=0.93 m

now we find the maximum distance at angle=45 degree

the maximum distance S=2.5^2/2*9.8*sin45=0.45 m

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