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A runner starts a 5-km race at 10:15 a.m. and finishes at 10:35 a.m. Given this information, you can calculate the runner’s
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
An airplane flies 80 km in 10 minutes and then flies 100 km in 20 minutes. The average speed of the airplane is
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
The trunk of a certain tree is 50 cm thick. Each year it gets thicker by 1 cm. How thick will the tree trunk be in 50 years?
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
Measurements of acceleration are given in units of
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
Speed measurements are given in units of
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
A rider finishes a 120-km bicycle trip in 3 hours. The average speed of the rider is
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
It can be important to know the velocity of an object, not just its speed, because
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
A car traveling at 25 m/s speeds up to 40 m/s over a period of 15 seconds. The average acceleration of the car is
40 km/hr
1 m/s2
distance/time
100 cm
average speed
velocity also tells direction
distance/time2
none of the above
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