Time And Distance

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Aug

02. Examples 1 to 5 of Time and Distance

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Aug

Examples 21 to 26 of Time and Distance

(21) A train running at 40 kmph takes 18 seconds to pass a platform. Next, it takes 12 seconds to pass a man walking at the rate of 4 kmph in the same direction. Find the length of the train and that of the platform.

Soln. Let…

Posted in: Examples 21 to 26 of Time and Distance,

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Aug

Examples 16 to 20 of Time and Distance

(16) A train 170 m long is running with a speed of 72 kmph. In what time will it pass a tunnel 230 m long ?

Soln. Speed of the train = u = $...$

Posted in: Examples 16 to 20 of Time and Distance,

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Aug

Examples 11 to 15 of Time and Distance

(11) An motor cars moves along the four sides of a square at the speeds of 20, 40, 60 and 80 km/hr. Find the average speed of the motor car around the field.

Soln. Since each side of the square be x km is same, average spee…

Posted in: Examples 11 to 15 of Time and Distance,

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Aug

Examples 6 to 10 of Time and Distance

(6) A goods train leaves a station at a certain time at a fixed speed. After 10 hours, an express train leaves the same station and moves in the same direction at a uniform speed of 120 kmph. This train catches the goods train in 5 hours. F…

Posted in: Examples 6 to 10 of Time and Distance,

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09

Aug

Examples 1 to 5 of Time and Distance
(1) Express 90 km/hr into meters/sec.

Soln. 90 km/hr = $\left(90\times\frac{5}{18}\right)$ m/sec = 25 m/sec.

(…

Posted in: Examples 1 to 5 of Time and Distance,

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08

Aug

Time And Distance
☼ Formulae ( Problems on Time, Speed & Distance ) :

■ Speed = $\frac{\mathrm{Distance}}{\mathrm{Time}}$

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