PHYS 1010 Study Guide - Midterm Guide: Antiderivative, Friction, European Route E6

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Published on 16 Oct 2018
School
York University
Department
Physics and Astronomy
Course
PHYS 1010
Professor
LAST NAME: STUDENT NR:
PHYS 1010 6.0: CLASS TEST 1
Time: 50 minutes; Calculators & formulae provided at the end = only aid; Total = 20 points.
1)[5] You work for the movers, and are pulling the two crates shown over a slippery surface
(kinetic friction between the crates and the floor µk= 0.1, but you wear super-shoes which
give you traction!) The boxes are accelerating with a= 0.12 m/s2. What is the tension in each
rope? Start with free-body diagrams for the crates.
1
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2) [5] A football player wants to kick a ball through the uprights as shown. The ball is kicked
from a distance of 30 m with a velocity of magnitude 15 m/s at an angle of 35with the
horizontal. Will the ball make it over the crossbar, which is at a height of 3.1 m? Ignore air
drag when you derive your answer.
2
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Document Summary

Time: 50 minutes; calculators & formulae provided at the end = only aid; total = 20 points. 1)[5] you work for the movers, and are pulling the two crates shown over a slippery surface (kinetic friction between the crates and the oor k = 0. 1, but you wear super-shoes which give you traction!) The boxes are accelerating with a = 0. 12 m/s2. 1: [5] a football player wants to kick a ball through the uprights as shown. The ball is kicked from a distance of 30 m with a velocity of magnitude 15 m/s at an angle of 35 with the horizontal. Ignore air drag when you derive your answer. 3: [5] a block slides up a frictionless, inclined plane with = 22 . The coe cient of kinetic friction between block and plane equals k = 0. 25. 4 vf = vi + a t f (t) = t df v(tf) = v(ti) +(cid:82) tf a(t) dt.

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