Question

which of the following dogs are accelerating? select all that apply. a chihuahua that is speeding up as it chases its owner straight down the stairs an australian shepherd that is turning sharply to the left as it runs around a tree a toy poodle that is being lifted straight upward at a constant speed by a young boy

Explanation:

Step1: Recall acceleration definition

Acceleration is a change in velocity. Velocity is a vector with speed and direction.

Step2: Analyze Chihuahua

A Chihuahua speeding up has a change in speed, so it is accelerating.

Step3: Analyze Australian shepherd

An Australian shepherd turning has a change in direction, so it is accelerating.

Step4: Analyze toy poodle

A toy poodle moving at a constant speed has no change in speed and no change in direction (moving straight up), so it is not accelerating.

Answer:

a Chihuahua that is speeding up as it chases its owner straight down the stairs, an Australian shepherd that is turning sharply to the left as it runs around a tree