Question
PHYICS &313 TEST I-A 02/15/2016 Qualitative (3pts each) 1. A particle travels along a curved path between two points P and Q as shown. The displacement of the particle does not depend on A) the location of P B) the location of Q. C) the distance traveled from P to Q. D) the shortest distance between P and Q. E) the direction of Q from P 2. Which one of the following situations is nor possible? s not possible? A) A body has zero velocity and non-zero acceleration. B) A body travels with a northward velocity and a northward acceleration. C) A body travels with a northward velocity and a southward acceleration. D) A body travels with a constant velocity and a time-varying acceleration. E) A body travels with a constant acceleration and a time-varying velocity 3. A car starts from rest and accelerates at a constant rate in a straight line. In the first second the car moves a distance of 2.0 meters. How fast will the car be moving at the end of the second second? A) 4.0 m/s B) 16 m/s ) 2.0 m/s D) 32 m/s E) 8.0 m/s 4.It is physically impossible for an object to have a negative acceleration and yet be speeding up. True False 5. While in flight, how do the x and y components of the velocity vector of the ball compare at the points B and C? A) The velocity components are non-zero at B and zero at C B) The x components are the same; the y component at C is zero m/s. C) The x components are the same; the y component has a larger magnitude at C than at B. D) The x component is larger at C than at B; the y component at B points up while at C, it points downward 6. A car travels 95 km to the north at 70.0 km/h, then turns around and travels 21.9 km at 80.0 km/h. What is the difference between the average speed and the average velocity on this trip? A) 27 km/h B 19 km/h C) 32 km/h D) 24 km/h 7. The motions of a car and a truck along a straight road are represented by the velocity-time graphs
Explanation / Answer
1.) E.) the direction of Q from P
