What change would increase the acceleration of the dog sled?

Question

(1 point)
• add another dog to the sled
• remove a dog from the sled
• add more mass to the sled
• run the sled up a hill

Answer 1

To increase the acceleration of the dog sled, the best option is to add another dog to the sled.

Increasing the number of dogs would increase the total force exerted on the sled (assuming the additional dog can maintain the same speed and effort), thus increasing acceleration based on Newton's second law: \( F = ma \) (where \( F \) is force, \( m \) is mass, and \( a \) is acceleration). All the other options would either decrease the force available or increase the mass without a corresponding increase in force, thus decreasing acceleration.

Answer 2

Ben and Peter are playing horseshoes. Ben takes the first turn, and his horseshoe lands three-fourths of the way to the target. Peter takes the next turn, and his horseshoe lands past the target. Which statement best explains the results? (1 point)
• Peter used a horseshoe with more mass and threw with less force than Ben.
The horseshoes have the same mass, but Peter threw with less force than Ben.
Peter used a horseshoe with more mass and threw with the same force as
Ben.
The horseshoes have the same mass, but Peter threw with more force than Ben.

Answer 3

The statement that best explains the results is: The horseshoes have the same mass, but Peter threw with more force than Ben.

Since Ben's horseshoe lands three-fourths of the way to the target, while Peter's horseshoe lands past the target, it suggests that Peter applied more force in his throw compared to Ben. The mass of their horseshoes being the same means that differences in distance covered can be attributed to the force applied in the throws.