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Unformatted text preview: Physics 101 [I] Express 6.23 ^ in ^ units. (Use 1 mi^= 5280 ft). [A] 0.0725 [B] 4JL1 [C] 374 (M )548  A particle's speed at time t is given by the formula v = fci 2 , where k is some constant. What are the dimensions of fc? , [A] [LT\ [B] [L/T] [C] [I/T 2 ] ([D])[L/T 3 ]  A car is speeding up on a highway with a constant acceleration of 4.00 m/s 2 . If the initial velocity of the car is 12.0 m/Sjhow long does it take it to travel 100.0 m? [A] 2.23 s [B] 3.15 s (tcj)4.68 s [D] 6.24 s v_y  Car 1 starts moving from rest just as Car 2 crosses it. If car 2 maintains a constant velocity of 20.0 m/s, and Car 1 a constant acceleration of 0.63 m/s 2 , how long does it take Car 1 to cross Car 2? [A] 32 s ([Bj}63 s [C] 79 s [D] 96 s  One second after being thrown straight down, an object is traveling at a speed of 20 m/s. What will be its speed two seconds after being thrown? m/s [B] 40 m/s [C] 50 m/s [D] 60 m/s  If you are walking 3 mi north, then 6 mi west, and then 5 mi north, what is the magnitude of your total displacement?of your total displacement?...
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- Spring '08