What change would increase the acceleration of the dog sled.
A. add more mass to the sled
B. remove a dog from the sled
C. add another dog to the sled
D. run the sled up a hill.
C. add another dog to the sled
The option that would increase the acceleration of the dog sled is C. Add another dog to the sled. Increasing the pulling force by adding another dog would result in a greater acceleration due to the increased force applied to the sled.
To determine which change would increase the acceleration of the dog sled, let's analyze each option and understand the factors that affect acceleration.
Acceleration is directly influenced by the net force acting on an object and inversely proportional to its mass. Therefore, we need to consider both the net force and the mass of the sled when evaluating the options.
A. Adding more mass to the sled: This would increase the mass of the sled, making it more difficult to accelerate due to inertia. Therefore, adding more mass would decrease the acceleration.
B. Removing a dog from the sled: Removing a dog would decrease the mass of the sled, therefore reducing inertia. Since acceleration is inversely proportional to mass, decreasing the mass increases the acceleration. Removing a dog would likely increase the acceleration.
C. Adding another dog to the sled: Adding a dog would increase the mass of the sled, which, as mentioned earlier, increases inertia and decreases acceleration. Therefore, adding another dog would decrease the acceleration.
D. Running the sled up a hill: Running the sled up a hill would introduce a change in the force acting on the sled. When the sled ascends a hill, gravity pulls it down, counteracting the forward force and reducing acceleration. Therefore, running the sled up a hill would decrease the acceleration.
Based on the analysis, the change that would increase the acceleration of the dog sled is option B - removing a dog from the sled. By reducing the mass of the sled, you decrease inertia, allowing for a higher acceleration.