Does the odometer of a car measure
distance traveled or displacement?
50%
0%
50%
0%
1.
2.
3.
4.
Distance traveled
displacement
neither
both
Does the speedometer of a car measure
speed or velocity?
75%
0%
0%
25%
1.
2.
3.
4.
speed
velocity
neither
both
Does the speedometer of a car measure
speed or velocity?
1.
2.
3.
4.
Instantaneous speed
Average speed
neither
both
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?
67%
33%
0%
0%
0%
1.
2.
3.
4.
At height h.
Above height h/2.
At height h/2.
Below height h/2 but above 0
height.
5. At height 0.
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?
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.
0%
0%
0%
0%
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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.
0%
0%
0%
0%1
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65
A projectile is launched from the ground at an
angle of 30o. At what point in its trajectory does
this projectile have the least speed?
30
1.
2.
3.
4.
Just after it is launched.
At the highest point of its flight.
Just before it hits the ground.
Halfway between the highest point
and ground.
5. The speed is always constant.
0%
0%
0%
0%
0%
1
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3
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65
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
0%
33%
0%
33%
33%
1.
2.
3.
4.
5.
Head directly west at any speed.
Head directly west very fast.
Head northwest at any speed.
Head northwest at 10 m/s.
Head northwest with a speed
greater than 10 m/s.
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
33%
33%
33%
0%
0%
1.
2.
3.
4.
5.
Head directly west at any speed.
Head directly west very fast.
Head northwest at any speed.
Head northwest at 10 m/s.
Head northwest with a speed
greater than 10 m/s.