Final Study Guide - Physics 211 Study Guide Scalars Vectors and Operations 1 What is the relationship between precision and accuracy How are they

Final Study Guide - Physics 211 Study Guide Scalars Vectors...

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Physics 211 Study Guide Scalars, Vectors and Operations: 1. What is the relationship between precision and accuracy? How are they different from uncertainty? 2. What is the difference between mass and weight? 3. Convert (1.5,3) to polar coordinates. 4. Add A (-3,2) and B ( 4,25 ° ) 5. What is B A ? Forces, Free Body Diagrams and Newton’s Laws: 1. Compare speed and velocity. 2. What are Newton’s three laws? How are they significant? 3. What are the four fundamental forces and how do they work? 4. Make a free body diagram of someone pushing a block with ( m ) mass up a hill. 5. Correct this statement: since a = 0 then v = 0 . 1D Kinematics: 1. A car is 2.0 km west of a traffic light at t = 0 and 5.0 km east of the light at t = 6.0 min. Assume the origin of the coordinate system is the light and the positive x direction is eastward. (a) What are the car’s position vectors at these two times? (b) What is the car’s displacement between 0 min and 6.0 min? 2. Assume an intercontinental ballistic missile goes from rest to a suborbital speed of 6.50 km/s in 60.0 s (the actual speed and time are classified). What is its average acceleration in meters per second and in multiples of g (9.80 m/s 2 )? 3. A diver bounces straight up from a diving board, avoiding the diving board on the way down, and falls feet first into a pool. She starts with a velocity of 4.00 m/s and her takeoff point is 1.80 m above the pool. (a) What is her highest point above the board? (b) How long a time are her feet in the air? (c) What is her velocity when her feet hit the water? 4. Given the following velocity-versus-time graph, sketch the position-versus-time graph.
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2D Kinematics: 1. The F-35B Lighting II is a short-takeoff and vertical landing fighter jet. If it does a vertical takeoff to 20.00-m height above the ground and then follows a flight path angled at 30°30° with respect to the ground for 20.00 km, what is the final displacement? 2. A particle’s acceleration is (4.0iˆ+3.0jˆ)m/s 2 .(4.0i^+3.0j^)m/s 2 . At t = 0, its position and velocity are zero. (a) What are the particle’s position and velocity as functions of time? (b) Find the equation of the path of the particle. 3. A projectile is launched at an angle of 30° and lands 20 s later at the same height as it was launched. (a) What is the initial speed of the projectile? (b) What is the maximum altitude? (c) What is the range? (d) Calculate the displacement from the point of launch to the position on its trajectory at 15 s. 4. A golfer on a fairway is 70 m away from the green, which sits below the level of the fairway by 20 m. If the golfer hits the ball at an angle of 40° with an initial speed of 20 m/s, how close to the green does she come?
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  • Spring '15
  • Farris

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