work and reasoning clearly. Include units with numeri opriate number of signific
ID: 1795237 • Letter: W
Question
work and reasoning clearly. Include units with numeri opriate number of significant figures. Draw a box around each equation or numerical answer art A: Calculations (20) 1) The figure below shows a vernier caliper scale set to a particular reading. What is the reading of the scale? Reading- cm 2) Perform the indicated operations to the correct number of significant figures a. 37.60 x 1.23 = b. 8.975/6.7 c. 3.765+ 1.2+37.21 3) A cart on a linear air track has a uniform acceleration of 0.172 m/s2. What is the velocity of the cart after 4.00 s if it is released from rest? 4) Which type of quantity is characterized by both magnitude and direction? a. a. scalar b. vector ctrigonometric d. algebraic variable Suppose that an ideal frictionless inclined plane has an angle of inclination of 5.00 degrees with respect to the horizontal. What is the acceleration of an object sliding down the plane? Assume that the acceleration due to gravity is g 9.80m/s. Show work. 5) 6) The tendency of a moving object to remain in unchanging motion in the absence of an unbalanced force is called A. inertia B. free fall C. acceleration. D. impulse. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the three quantities. What are the other two? 7) length and force b. power and force c. length and time a. d. force and time e. Power and time 8) Jeff throws a ball straight up. For which situation is the vertical velocity zero? a. on the way up b at the top c. on the way back down d. both a and c are correct 9) A ball is pushed with an initial velocity of 4.0 mls. The ball rolls down a hill with a constant acceleration of 1.6 m/s. The ball reaches the bottom of the hill in 8.0 s. What is the ball's velocity at the bottom of the hill? 75 cm, and a mass of 65.3 grams. What is the density 0) A cylinder has a length of 3.23 cm, a diameter of 1. of the cylinder?Explanation / Answer
1. 2.23 ( after the major second check where the sliding cale 1 is . here it is between 2.2 and 2.3. The check which indication of slidining scale matches exacty with any indication line of main scale
2. a. 46.25 b. 1.3 c. 42.2
3. a is given 0.172 m/s2
using v = u + a t
v = 0 + (0.172)*(4) = 0.688 m/s
4. vector. A vector is a quantitity with both magnitude and direction. e. g velocity is vector
5. it will be the component of acceleration along the inclined plane which is g sin 5 = 9.80* sin 5 = 0.854 m/s2
6. inertia
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