Module 1 Unit Test Physics 1401 Question 1 State how many significant figures are proper in the results of the following calculations 106 7 90 46 210 1 01 Answer 1 Question 2 State how many significant figures are proper in the results of the following calculations 5 9 2 Answer 2 Question 3 State how many significant figures are proper in the results of the following calculations 7 80 x 10 19 3712 Answer 3 Question 4 Tectonic plates are large segments of the earth s crust that move slowly Suppose one such plate has an average speed of 5 50 cm per year What distance m does it move in 60 0 seconds at this speed Put your answer in scientific notation in the following way 2 07e 12 no units Answer 2 9e 11 Question 5 Tectonic plates are large segments of the earth s crust that move slowly Suppose one such plate has an average speed of 5 50 cm per year You also should know the distance it traveled in 60 0 s previous question What is its speed in miles per million years Answer 34 18 Question 6 Assume that an MX missile goes from rest to a suborbital velocity of 6 50 km s in 40 0 s What is its average acceleration in m s 2 Answer 162 5 Question 7 Assume that an MX missile goes from rest to a suborbital velocity of 6 50 km s in 40 0 s What is its average acceleration in m s 2 What is its average acceleration in multiples of g Answer 16 58 Question 8 In an attempt to escape his island Gilligan builds a fact and sets to sea The wind shifts a great deal during the day and he is blown along the following straight lines 2 50 km 450 north of west then 4 70 km 600 south of east then 5 10 km straight east then 7 20 km 55o south of west and finally 2 80 km 100 north of east What is his final position relative to the island Answer 8 8 km Question 9 In an attempt to escape his island Gilligan builds a fact and sets to sea The wind shifts a great deal during the day and he is blown along the following straight lines 2 50 km 450 north of west then 4 70 km 600 south of east then 5 10 km straight east then 7 20 km 55o south of west and finally 2 80 km 100 north of east What is angle of the final result Answer 60 80 south of east Question 10 Which of the following is a scientific statement Select one a The moon is made of green cheese Testable b There are things we will need know about c Matter is filled with undetectable particles d There are parts of the universe that will never be found by man Question 11 What is the acceleration of a car that maintains a constant velocity of 100 km h for 10 seconds Select one a 0 b 10 km h s c 10 m s s d 1000 km h s Question 12 The gain in speed each second for a freely falling object is about Select one a 0 b 5 m s c 10 m s d 20 m s e Depends on the initial speed Question 13 Roll a bowling ball off the edge of a table As it falls its horizontal component of motion Select one a Decreases b remains constant c increases Question 14 A bullet is dropped from the top of the Willis Tower in Chicago while another bullet is fired downward from the same location Neglecting air resistance acceleration is greatest for the Select one a fired bullet b dropped bullet c is 9 8 m s s for each Question 15 A ship sets sail from Rotterdam The Netherlands heading due north at 7 00 m s relative to the water The local ocean current is 1 50 m s in a direction 40 north of east What is the velocity of the ship relative to the earth m s Answer 8 05 Question 16 Serving at a speed of 216 km h a tennis player hits the ball at a height of 2 70 m and an angle below the horizontal The service line is 11 9 m from the net which is 0 910 m high What is the angle such that the ball just crosses the net Answer 7 6
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