what wil be the effect on the velocity of the motorcycle if its speed increases or decreases, but its dirction remains unchanged?

The velocity of an object is a vector quantity, which means it has both magnitude (speed) and direction. If the speed of the motorcycle increases or decreases, but its direction remains unchanged, the velocity of the motorcycle will also increase or decrease correspondingly.

Here's the step-by-step explanation:

1. Velocity = Speed + Direction: Velocity is a vector quantity that includes both the speed (how fast the object is moving) and the direction (which way the object is moving).

2. Increase in Speed: If the speed of the motorcycle increases, but the direction remains the same, the velocity will increase. This is because the magnitude of the velocity (which is the speed) has increased.

3. Decrease in Speed: Similarly, if the speed of the motorcycle decreases, but the direction remains the same, the velocity will decrease. This is because the magnitude of the velocity (which is the speed) has decreased.

4. Unchanged Direction: Since the direction of the motorcycle is unchanged, it does not affect the velocity. The direction component of the velocity remains the same.

So, in conclusion, any change in the speed of the motorcycle, whether an increase or decrease, will result in a corresponding change in its velocity, provided the direction remains unchanged.