9) A particle continuously moves in a circular path at constant speed in a count

Question

9) A particle continuously moves in a circular path at constant speed in a counter-clockwise direction. Consider a time interval during which the particle moves along this circular path from point P to point Q. Point Q is exactly half-way around the circle from Point P. The average velocity for this time period points left. True false

10) An object's velocity is the magnitude of its speed vector. true false

11) Velocity and acceleration are measured in different units. true false

12) When an object's velocity and acceleration have the same sign, the object's speed is incresing. true false

13) The constant g represents the fastest speed that a falling object can attain. true false

14)At the heighest point of its path, the horizontal and vertical components of a projectile's velocity are both zero. true false

15) Only the vertical component of a projectile's acceleration is equal to -9.8 m/s^2

1) The SI base units for time are seconds true false

2) The one significant figure, fast runners can reach speeds of about 10 m/s true false

3) "14 500" has three significant figures. true false

4) 3.5 kg is equivalent to 35 000 g. true false

Explanation / Answer

9.T

10.F

11.T

12.T

13.F

14.F

15.T

1.T

2.F

3.F

4.F

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