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Does the odometer of a car measure distance traveled or displacement? 1.Distance traveled 2.displacement 3.neither 4.both.

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Presentation on theme: "Does the odometer of a car measure distance traveled or displacement? 1.Distance traveled 2.displacement 3.neither 4.both."— Presentation transcript:

1 Does the odometer of a car measure distance traveled or displacement? 1.Distance traveled 2.displacement 3.neither 4.both

2 Does the speedometer of a car measure speed or velocity? 1.speed 2.velocity 3.neither 4.both

3 Does the speedometer of a car measure speed or velocity? 1.Instantaneous speed 2.Average speed 3.neither 4.both

4 A ball is thrown straight upward with some initial speed. When it reaches the top of its flight (at a height h), a second ball is thrown straight upward with the same initial speed. Where with the balls cross paths? 1.At height h. 2.Above height h/2. 3.At height h/2. 4.Below height h/2 but above 0 height. 5.At height 0.

5 You drop a rock off a bridge. When the rock has fallen 4 m, you drop a second rock. As the two rocks continue to fall, what happens to their separation? 60 1.Their separation increases. 2.Their separation stays constant at 4m. 3.Their separation decreases. 4.It is impossible to answer with out more information

6 You drop a package from a plane flying at constant speed in a straight line. Without air resistance, the package will: 30 1.Quickly lag behind the plane while falling. 2.Remain vertically under the plane while falling. 3.Move ahead of the plane while falling. 4.Not fall at all

7 A projectile is launched from the ground at an angle of 30 o. At what point in its trajectory does this projectile have the least speed? 30 1.Just after it is launched. 2.At the highest point of its flight. 3.Just before it hits the ground. 4.Halfway between the highest point and ground. 5.The speed is always constant

8 A boater wants to go directly to the opposite (western) shore of a moving river. The water is moving to the south at 10 m/s. The boater should 1.Head directly west at any speed. 2.Head directly west very fast. 3.Head northwest at any speed. 4.Head northwest at 10 m/s. 5.Head northwest with a speed greater than 10 m/s.

9 A boater wants to go directly to the opposite (western) shore of a moving river. The water is moving to the south at 10 m/s. The boater should 1.Head directly west at any speed. 2.Head directly west very fast. 3.Head northwest at any speed. 4.Head northwest at 10 m/s. 5.Head northwest with a speed greater than 10 m/s.


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