A train decelerates from a speed of 30 m s to r... - SS1 Physics Motion 2 Question
A train decelerates from a speed of 30 m/s to rest in 10 seconds. What is the magnitude of its deceleration?
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To find the magnitude of deceleration, we use the equation a = (v - u) / t, where a is the acceleration, v is the final velocity, u is the initial velocity, and t is the time.
Given:
u = 30 m/s
v = 0 m/s
t = 10 s
a = (0 m/s - 30 m/s) / 10 s
a = -30 m/s / 10 s
a = -3 m/s2
Therefore, the magnitude of the deceleration is 3 m/s2.
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