1.The velocity of a car increases from 43.2km/hr [N] to86.4 km/hr [N] over a 0.12hr interval. What is the car'sacceleration in km/hr?T Ava =AtAv = v, -v,

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Answered: 1. The velocity of a car increases from…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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5. DETERMINE THE STOPPING DISTANCES FOR A CAR WITH AN INITIAL SPEED OF 95km/h AND A HUMAN REACTION TIME OF 1.0 s, FOR AN ACCELERATION OF............. (A) a=-4.0 m/s², (B) a= -8.0 m/s² (Hint: First, convert 95 km/h to m/s)
7. Determine the acceleration of a car starting from rest, moving 45 m [S] in 1.0 minutes. a. 0.025 m/s? [S] b. 1.5 m/s? [S] c. 9.0 x 10' m/s? [S] d. 1.5 m/s [S] e. 9.0 x 10' m/s [S]
13. A boy walks 155 m at a speed of 3.5 m/s and then runs for 100 m at 8.2 m/s along a straight line. Calculate his average velocity. 14.A boat can accelerate from 2 to 21 km/h in 10 s. How far has the boat travelled in this time?
what constant acceleration in SI units must a car have to go from zero to 60mph in 14sec? how far has the car traveled when it reaches 60 mph...need si units... how far has car travel when it reach 60 mph...need units in feet( 2 sig fig)
25. An object has increasing velocity when its acceleration is greater than zero. It has increasing speed when its velocity and acceleration have the same sign. For what times is: a. the velocity of the ball increasing? b. The speed of the ball increasing?
A stone is dropped from rest near the surface of moon. The velocity of the stone after 3 seconds is [Given data : acceleration due to gravity of moon, 9moon = 1.6m/s2,acceleration due to gravity of earth, gearth = 9.8 m/s²] O a. +29.4m/s O b. -4.8m/s O c. -29.4m/s O d. +4.8m/s
2. A boat heads directly across a river41 m wide at 3.8 m/s. The current is flowing downstream at 2.2 m/s. a) What is the resultant velocity of the boat? b) How much time does it take the boat to cross the river? 3. Determine the magnitude and direction of the forces: 28 N, West and 60 N, Νorth
5. An “L" train leaves the Washington station on the blue line starting from rest and accelerating at a constant acceleration of 1.35 m/s² for 16.0 s. It runs at a constant speed for 85.0 s and then slows down at a rate of 3.00 m/s? until it stops at the Grand station. What is the total distance traveled by the subway train?
6. A car, starting from rest, accelerates in a straight-line path at a constant rate of 2.5 m/s2. How far will the car travel in 12 seconds? (A) 4.8 m (B) 30 m (C) 120 m (D) 180 m time of

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1. The velocity of a car increases from 43.2km/hr [N] to 86.4 km/hr [N] over a 0.12hr interval. What is the car's acceleration in km/hr?T