1. What was Swimmer C's average speed?
1 answer:
Answer:
4.8 km/hr ;
0
Explanation:
Based on information plotted on the graph :
Distance traveled by swimmer C = 2400 m
Travel time of swimmer C = 30 minutes
Converting distance to km:
2400 m = 2400 / 1000 = 2.4 km
Converting time to hour :
30 minutes = 30 / 60 = 0.5 hour
Average speed = Distance traveled / time taken
Average speed = 2.4 km / 0.5 hour = 4.8 km/hr
2.)
Swimmer A's average speed during the period 10 to 20 minutes ;
Change in distance /change in time
(400 - 400) / (20 - 10) = 0
Hence, distance traveled is 0
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Answer:
Top speed is 31.68 m/s
Explanation:
Speed of a body is the distance traveled by the body in unit time.
Speed is generally expressed in meter per second or kilometer per hour.
Here, the cheetah travels a distance of 274 m in 8.65 s.
Therefore, speed of cheetah is the distance traveled by it in one second.
For 8.65 s, distance traveled is 274 m
For 1 s, distance traveled will be meters per second. This value is called speed.
So, speed is given as the ratio of the distance traveled to that of the time taken.
∴ Top speed of cheetah is given as:
Here, is the top speed of cheetah.