The table below shows data of sprints of animals that traveled 75 meters. at each distance marker, the animals' times were recorded. which animal moves with accelerated motion?

Animal 1

Explanation:

By the definition we know:

From the given data table we calculate the speed of each animal at the given distance points.

Animal 1:

after 25 meters:

after 50 meters:

enough to prove that there exists acceleration  because of  change in speed with time.

Animal 2:

after 25 meters:

after 50 meters:

after 75 meters:

has constant speed, hence no acceleration.

Animal 3:

after 25 meters:

after 50 meters:

after 75 meters:

has constant speed, hence no acceleration.

Animal 4:

after 25 meters:

after 50 meters:

after 75 meters:

has constant speed, hence no acceleration.

the answer is b, have negligible mass