1. The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck All three vehicles have a constant velocity.

All three vehicles have a constant velocity.

All three vehicles have a constant acceleration.

All three vehicles have a constant acceleration.

The pickup truck is the only vehicle accelerating.

The pickup truck is the only vehicle accelerating.

The minivan and sedan are both changing veloc

The pickup truck is the only vehicle accelerating.

Explanation:

Acceleration refers to the change in velocity per unit time which means that when the velocity changes, acceleration will be produced and if there is constant velocity of a vehicle so the acceleration will be zero. All three vehicles have same velocity of 15 m/s but the truck has no uniform velocity which means acceleration is produced in the truck while no acceleration is formed by three vehicles.

the  frequency of a wave represents  the number of wavelengths that pass a specific point per second. the unit for  frequency  is hertz (hz).

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