Q). A train is travelling at a speed of 90 km/h. Brakes are applied to as to produce a uniform retardation of 0.5 $m / s^{2}$ . Find how far the train will go before it is brought to rest.

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Solution

$D e a r s t u d e n t, v^{2} = u^{2} + 2 a S v = 0 u = 90 k m / h = 90 \times \frac{5}{18} = 25 m / s 0 = 25^{2} + 2 \times (- 0.5 \times S) S = \frac{25 \times 25}{2 \times 0.5} = 625 m R e g a r d s$

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Q). A train is travelling at a speed of 90 km/h. Brakes are applied to as to produce a uniform retardation of 0.5 m/s2. Find how far the train will go before it is brought to rest.

Dear student,v2=u2+2aSv=0u=90km/h=90×518=25m/s0=252+2×(-0.5×S)S=25×252×0.5=625mRegards

Q). A train is travelling at a speed of 90 km/h. Brakes are applied to as to produce a uniform retardation of 0.5 $m / s^{2}$ . Find how far the train will go before it is brought to rest.

$D e a r s t u d e n t, v^{2} = u^{2} + 2 a S v = 0 u = 90 k m / h = 90 \times \frac{5}{18} = 25 m / s 0 = 25^{2} + 2 \times (- 0.5 \times S) S = \frac{25 \times 25}{2 \times 0.5} = 625 m R e g a r d s$