A train is moving with a velocity of 80 m/s and comes to a stop in 10 seconds. W

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Question: A train is moving with a velocity of 80 m/s and comes to a stop in 10 seconds. What is the acceleration of the train?

Options:

Correct Answer: -8 m/s²

Solution:

Using the formula a = (v_f - v_i) / t, where v_f = 0 m/s, v_i = 80 m/s, and t = 10 s, we get a = (0 - 80) / 10 = -8 m/s².

A train is moving with a velocity of 80 m/s and comes to a stop in 10 seconds. What is the acceleration of the train?

A train is moving with a velocity of 80 m/s and comes to a stop in 10 seconds. What is the acceleration of the train?

Step 1: Identify the initial velocity (v_i) of the train, which is 80 m/s.
Step 2: Identify the final velocity (v_f) of the train, which is 0 m/s because the train comes to a stop.
Step 3: Identify the time (t) it takes for the train to stop, which is 10 seconds.
Step 4: Use the formula for acceleration: a = (v_f - v_i) / t.
Step 5: Substitute the values into the formula: a = (0 - 80) / 10.
Step 6: Calculate the result: a = -80 / 10 = -8 m/s².
Step 7: Interpret the result: The negative sign indicates that the train is decelerating.

Acceleration – Acceleration is the rate of change of velocity over time, calculated using the formula a = (v_f - v_i) / t.
Kinematics – This question involves basic kinematic equations that relate velocity, acceleration, and time.