A train has an initial velocity of 44m/s and an acceleration of -4m/s\(^{2}\). Calculate its velocity after 10 seconds
Question 1 Report
A train has an initial velocity of 44m/s and an acceleration of -4m/s\(^{2}\). Calculate its velocity after 10 seconds
Answer Details
The velocity of the train after 10 seconds can be calculated using the formula:
v = u + at
where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time.
Substituting the given values, we get:
v = 44 m/s + (-4 m/s^2) x 10 s
v = 44 m/s - 40 m/s
v = 4 m/s
Therefore, the velocity of the train after 10 seconds is 4m/s. Answer option D is correct.
Explanation: The train has an initial velocity of 44 m/s and an acceleration of -4 m/s^2. The negative sign indicates that the acceleration is in the opposite direction to the initial velocity, which means that the train is slowing down. After 10 seconds, the train's velocity decreases by 40 m/s (4 m/s^2 x 10 s) to reach a final velocity of 4 m/s.
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