t21 Phy 101 Form 0 2009

# t21 Phy 101 Form 0 2009 - P hysics 101 FORM 0 [1] A c ar...

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Physics 101 FORM 0 [1] A car moving at 10.0 m/s encounters a bump that has a circular cross-section with a radius of 30.0 m. What is the normal force exerted by the seat of the car on a 60.0-kg passenger when the car is at the top of the bump? [A] 200 N ® 389 N [e] 589 N [D] 650 N IE] 789 N [2] A simple pendulum, consisting of a mass m and a string of length L, swings upward, making an angle 0 with the vertical. The work done by the tension force is @zero [B] mgL [e] cos 0 [D] sin 0 [E] mgLtanO [3] What is the horsepower needed to change the speed of a 1600-kg sport utility vehicle from 15.0 m/s to 40.0 m/s in 4.00 seconds? (1 hp 746 W.) [Al18.8 hp [B] 36.9 hp [e] 85.2 hp [D]188 hp @369 hp [4] Two blocks of masses ml and m2 are released from the top of two frictionless inclined planes of the same height making 30° and 60° angles with the horizontal direction, respectively. Which of the blocks is going faster when it reaches the bottom of its respective incline? Block 1 is faster. [B] Block 2 is faster. ([C)Both blocks have the same speed at the bottom. [I)] We must know the actual masses of the blocks to answer. There is not enough information to answer the question. [5] A 75.0-kg astronaut wearing a 25.0-kg spacesuit while floating in space fires a little gas jet that shoots out a blast of 10.0 g of gas in the opposite direction at 100 m/s. He in turn [A: moves in the opposite direction at 0.100 m/s [B] moves in the opposite direction at 1.00 [e] moves in the opposite direction at 10.0 m/s moves in the opposite direction at 100 @none of these [6] A 900-kg car traveling east at 15.0

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## This note was uploaded on 10/16/2011 for the course PHY 101 taught by Professor Ashkenkai during the Spring '08 term at FIU.

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t21 Phy 101 Form 0 2009 - P hysics 101 FORM 0 [1] A c ar...

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