A motor scooter travels east at a speed of $13 m / s$ . The driver then reverses direction and heads west at $17 m / s$ . What was the change in velocity of the scooter? (in m/s)

4

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30

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32

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Solution

The correct option is B $30$
Consider the direction of west to be positive direction.
Final velocity $v = 17 m / s$
Initial velocity $u = - 13 m / s$
Thus change in velocity $Δ v = v - u = 17 - (- 13) = 30 m / s$

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A motor scooter travels east at a speed of 13m/s. The driver then reverses direction and heads west at 17m/s. What was the change in velocity of the scooter? (in m/s)

The correct option is B 30Consider the direction of west to be positive direction.Final velocity v=17 m/sInitial velocity u=−13 m/sThus change in velocity Δv=v−u=17−(−13)=30 m/s

A motor scooter travels east at a speed of $13 m / s$ . The driver then reverses direction and heads west at $17 m / s$ . What was the change in velocity of the scooter? (in m/s)

The correct option is B $30$
Consider the direction of west to be positive direction.
Final velocity $v = 17 m / s$
Initial velocity $u = - 13 m / s$
Thus change in velocity $Δ v = v - u = 17 - (- 13) = 30 m / s$