# Physics

A city has streets laid out in a square grid, with each block 135 m long. If you drive north for three blocks, then west for two blocks, how far are you from your starting point? #2)A ball on a porch rolls 60 to the porch's edge, drops 40 , continues rolling on the grass, and eventually stops 80 from the porch's edge. What is the magnitude of the ball's total displacement, in centimeters? #3)Dave hits a hockey puck at 13 toward the goal. If the puck travels 10 to the goal, how long does it take to get there? #4)The sun is 21 above the horizon. It makes a 45 -long shadow of a tall tree.How high is the tree? 5)An airplane accelerates down the runway for 500 , then lifts into the air at an angle of 20.0 degrees above the ground.When the plane has traveled 300 in the air, what is its distance from where it started on the runway? 6)A car starts at the origin and moves with velocity How far from the origin will the car be after traveling for 45 s? 7)A speed skater moving across frictionless ice at 8.5 hits a 5.0 -wide patch of rough ice. She slows steadily, then continues on at 5.5 .What is her acceleration on the rough ice? 8)A rock is tossed straight up with a speed of 23 . When it returns, it falls into a hole 11 deep. What is the rock's velocity as it hits the bottom of the hole? How long is the rock in the air, from the instant it is released until it hits the bottom of the hole?