Remco Zegers PHY 231 Fall 2003 Set 1 Units and Measurments due Aug 30 Due date Sat 30 Aug 2003 11 00 01 PM EST Evaluate the following endoouttext prob 4 35 107 9 15 10 28 prob 4 35 107 9 15 10 28 You are correct Your receipt is 498 1300 1 Remco Zegers PHY 231 Fall 2003 Set 1 Units and Measurments due Aug 30 2 Calculate the circumference of a circle of radius 3 26 cm prob You are correct Your receipt is 498 1202 prob Calculate the area of a circle of radius 3 95 cm You are correct Your receipt is 498 1202 A house is 50 8 ft long and 29 3 ft wide and has 8 42 ft high ceilings What is the volume of the interior of the house in cubic meters You are correct Your receipt is 498 1206 What is the volume of the interior of the house in cubic centimeters You are correct Your receipt is 498 1206 The base of a pyramid covers an area of 12 3 acres 1 acre 43560 ft2 and has a height of 555 ft Fig P1 24 If the volume of a pyramid is given by the expression V 1 3 b555 wherebistheareaof thebaseand555 is the height find the volume of this pyramid in cubic meters You are correct Your receipt is 498 1212 Units mix and match Choose the correct SI units for the function of x v a t and m given A kg m2 s2 A kg m s2 A kg m2 s A kg m s A kg m2 s3 A kg m2 A m s kg A m s2 1 2 3 4 Choose from A B C D E F G H a acceleration mv2 t m v t 2 mv You are correct Your receipt is 498 1887 Remco Zegers PHY 231 Fall 2003 Set 1 Units and Measurments due Aug 30 3 Two perpendicular sides of a triangle are 5 31m and 7 45m long respectively Find the length of the third side of the triangle Remco Zegers PHY 231 Fall 2003 Set 2 Motion in 1 dimension due Sep 6 4 Due date Sat 06 Sep 2003 11 00 01 PM EST You are correct Your receipt is 498 1673 Find the smallest angle of the triangle in the previous problem in degrees You are correct Your receipt is 498 1673 Position m 400 300 200 100 Consider A 104 m kg and B 52 km g Please identify which operations are possible and which are not If the operation is possible also check the given result 0 0 10 20 30 40 Time sec Choose from This operation is impossible This operation is possible but the answer is false This is correct 1 You can multiply A and B and get 5408 m2 kg2 2 You can divide A by B and get 2 The graph above shows the position of a car in meters measured from a stoplight after the light turns green Calculate the average speed of the car during the period from t 0 0 s to t 20 0 s You are correct Your receipt is 498 1618 3 You can add A and B2 and get 2808 m kg 5 You can multiply A and B and get 5408 m kg Speed m s 4 You can add A and B and get 156 m kg Va You are correct Your receipt is 498 1549 0 0 1 2 3 4 Time s 5 6 7 8 The Graph above shows the speed of a car traveling in a straight line as a function of time The value of Va is 3 40 m s Calculate the distance traveled by the car from a time of 2 40 to 5 90 seconds You are correct Your receipt is 498 1624 Remco Zegers PHY 231 Fall 2003 Set 2 Motion in 1 dimension due Sep 6 5 Remco Zegers PHY 231 Fall 2003 Set 2 Motion in 1 dimension due Sep 6 6 Calculate the first time where the ball has half of its initial velocity Vb Speed m s You are correct Your receipt is 498 1628 0 0 1 2 3 4 Time s 5 6 7 8 The Graph above shows the speed of a car traveling in a straight line as a function of time The car accelerates uniformly and reaches a speed Vb of 4 00 m s in 8 00 seconds Calculate the distance traveled by the car from a time of 0 60 to 7 60 seconds A car starts from rest and travels for 4 91 s with a uniform acceleration of 1 42 m s2 The driver then applies the brakes causing a uniform acceleration of 1 98 m s2 If the brakes are applied for 2 92 s how fast is the car going at the end of the braking period You are correct Your receipt is 498 1226 How far has the car gone You are correct Your receipt is 498 1226 You are correct Your receipt is 498 1628 Consider the plot of position vs time below A young woman named Kathy Kool buys a sports car that can accelerate at the rate of 4 61 m s2 She decides to test the car by dragging with another speedster Stan Speedy Both start from rest but experienced Stan leaves the starting line 1 12 s before Kathy If Stan moves with a constant acceleration of 3 64 m s2 and Kathy maintains an acceleration of 4 61 m s2 find the time it takes Kathy to overtake Stan You are correct Your receipt is 498 1302 Calculate the distance she travels before she catches him You are correct Your receipt is 498 1302 Calculate the speed of Kathy s car at the instant she overtakes Stan You are correct Your receipt is 498 1302 Calculate the speed of Stan s car at the instant he is overtaken by Kathy You are correct Your receipt is 498 1302 1 2 3 4 Choose from True False A B C D E F G The acceleration is positive in regions B and F The velocity is never negative The velocity is smallest in region The acceleration is negative in region You are correct Your receipt is 498 1192 A ball is thrown vertically upwards with an initial velocity of 27 0 m s Neglecting air resistance how long is the ball in the air You are correct Your receipt is 498 1628 What is the greatest height reached by the ball You are correct Your receipt is 498 1628 Average Acceleration A plane goes from 20 m s to 2 m s in 13 seconds What is its average acceleration in m s2 Hint Use equation 2 from the kinematic equations Be careful with the signs Solution Average acceleration final velocity initial velocity time Equation aav vf vi t 2 m s 20 m s 13 s 1 38461538461538 m s2 You are correct Your receipt is 498 1627 Remco Zegers PHY 231 Fall 2003 Set 3 …
View Full Document
Unlocking...