Question

A westward-moving bicycle increased its speed from 2.0m/s to 12.0m/s in 4.0 seconds. What is the magnitude and direction of the acceleration?

Answer 1

Answer:

2.5 m/s^2

Explanation:

Acceleration = (Final Velocity - Initial Velocity) / TIme

Acceleration = 12 - 2 / 4

=> Acceleration = 10 /4

=> Accelration = 5/2

=> Acceleration = 2.5 m/s^2

So, Acceleration is 2.5 m/s^2

Answer 2

The acceleration of the bicycle which is the change in the velocity of the bike with change in time will be 2.5m/s in the Westward direction

• Initial speed = 2.0 m/s
• Final speed = 12.0 m/s

• Change in time, △t = 4.0 seconds

We define acceleration thus :

• Acceleration = (△velocity / △time)

• Change in velocity = (12 - 2) = 10 m/s

• Acceleration = 10 / 4 = 2.5 m/s²

Therefore, the acceleration of the bike will be 2.5m/s² in the West direction

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