A 2-m-long scooter moves past a plank completely in 5 s. The length of the plank is 3 m. What is the speed of the scooter?
1 m/s
The correct answer is 1 m/s.
When solving problems involving one object passing another, always carefully consider the total distance required for the complete passing to occur. This often involves summing the lengths of the objects involved. Uniform speed means the object covers equal distances in equal intervals of time. This problem assumes the scooter is moving at a uniform speed.
Similar Questions
A 315 - m - long train is moving at a speed of 24 km/h. It will cross a man coming from the opposite direction at a speed of 3 km/h in __________.
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Important Questions from Relative Speed
In a circular race of 2500 m, a man and a woman start from a point towards opposite directions with speeds of 37 km/h and 35 km/h, respectively. After how much time from the start of the race will they meet for the first time?
- X and Yrun a 3 km race along a circular course of length 300 m. Their speeds are in the ratio 3 : 2. If they start together in the same direction, how many times would the first one pass the other (the start-off is not counted as passing)?
A train of length 600 meters passes another train of length 1000 meters moving in the opposite direction in 96 seconds. If the speed of both the trains is the same, then what is the speed of each train?
A train, running at a speed of 36 kmph, takes 60 seconds to cross an electric pole. How much time it will take to cross a platform of length 250 meter?
A truck covered a distance of 780 km in 12 hours. What distance would a car cover in 11 hours travelling at a speed which is seven kmph more than that of the truck?
