If a car accelerates from rest to a speed of 25 m/s in 5 seconds, what is its ac

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Question: If a car accelerates from rest to a speed of 25 m/s in 5 seconds, what is its acceleration?

Options:

Correct Answer: 3 m/s²

Solution:

Acceleration = (final speed - initial speed) / time = (25 m/s - 0) / 5 s = 5 m/s².

If a car accelerates from rest to a speed of 25 m/s in 5 seconds, what is its acceleration?

If a car accelerates from rest to a speed of 25 m/s in 5 seconds, what is its acceleration?

Step 1: Identify the initial speed of the car. Since the car starts from rest, the initial speed is 0 m/s.
Step 2: Identify the final speed of the car. The final speed given is 25 m/s.
Step 3: Identify the time taken for the acceleration. The time given is 5 seconds.
Step 4: Use the formula for acceleration: Acceleration = (final speed - initial speed) / time.
Step 5: Substitute the values into the formula: Acceleration = (25 m/s - 0 m/s) / 5 s.
Step 6: Calculate the difference in speed: 25 m/s - 0 m/s = 25 m/s.
Step 7: Divide the difference in speed by the time: 25 m/s / 5 s = 5 m/s².
Step 8: Conclude that the acceleration of the car is 5 m/s².

Acceleration – Acceleration is the rate of change of velocity of an object over time.
Kinematic Equations – Basic kinematic equations relate speed, acceleration, and time.