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# Assign1 - PHY 2130 Homework solutions Assignment 1 1.6(a...

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PHY 2130 Homework solutions Assignment 1 1.6 (a) Given that a F m , we have F ma . Therefore, the units of force are those of ma , ( 29 2 M L T F = = -2 M LT . (b) newton = 2 kg m s . 1.21 8 3 m 3600 s 1 km 1 mi 3.00 10   s 1 h 10  m 1.609 km c       = × =             8 6.71 10   mi h × 1.39 (a) From the Pythagorean theorem, the unknown side is ( 29 ( 29 2 2 2 2 9.00 m 6.00 m = b c a = - - 6.71 m . b) 6.00 m tan 6.71 m θ = = 0.894 (c) 6.71 m sin 9.00 m φ = = 0.746 3.1 Your sketch should be drawn to scale, and be similar to that pictured at the right. The angle from the westward direction, , can be measured as 4°, and the length of R found to be 7.9 m. The resultant displacement is then 7.9 m at 4  N of W ° . 3.11 (a) Her net x (east-west) displacement is 3.00 0 6.00 3.00 blocks - + + =+ , while her net y (north-south) displacement is 0 4.00 0 4.00 blocks + + =+ . The magnitude of the resultant displacement is (

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Assign1 - PHY 2130 Homework solutions Assignment 1 1.6(a...

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