A train is travelling at a speed of 90 kmh-1. Brakes are applied so as to produce a uniform acceleration of -0.5 ms-2. Find how far the train will go before it is brought to rest? NCERT Class IX Sciences - Main Course Book Chapter 8. Motion
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▶u = 90km / h 90× 5/18 = 25m/sec
▶a = -0.5
▶v = 0
▶s = ?
▶2as = v^2 - u^2
▶s = v^2 - u^2 / 2a
▶s = 0^2 - 25^2 / 2 × (-0.5)
▶s = -625/ -1
▶▶s = 625m
_________________________
▶u = 90km / h 90× 5/18 = 25m/sec
▶a = -0.5
▶v = 0
▶s = ?
▶2as = v^2 - u^2
▶s = v^2 - u^2 / 2a
▶s = 0^2 - 25^2 / 2 × (-0.5)
▶s = -625/ -1
▶▶s = 625m
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