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
To increase the acceleration of the dog sled, the best option would be to add another dog to the sled. Therefore, option C is the correct choice. The additional dog would provide more force, allowing for increased acceleration.
To determine which change would increase the acceleration of the dog sled, let's consider the principles of Newton's second law of motion. According to this law, the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
Therefore, the options that can potentially increase the acceleration of the dog sled are those that either increase the net force or decrease the mass of the sled.
A. Adding more mass to the sled would not increase the acceleration since it would increase the overall mass, making it harder to move.
B. Removing a dog from the sled could potentially decrease the mass, which would increase the acceleration. However, this option could also decrease the net force unless the remaining dogs compensate by pulling harder.
C. Adding another dog to the sled could increase the net force, resulting in an increase in acceleration.
D. Running the sled up a hill increases the force required to overcome the gravitational force acting against the sled. This increased net force would increase the acceleration.
Based on these explanations, options C (add another dog to the sled) and D (run the sled up a hill) could both potentially increase the acceleration of the dog sled.