Question

1. after hockey practice, carissa and keenan were playing a game where they were pushing some objects to get them to crash. they were using a cone and two different pucks - a black one with more mass for crash 1 and a blue one with less mass for crash 2. they want to know what happened to the cone. use the information from the diagram to answer. in which crash did the cone experience a stronger force? how do you know?

a there was no force on the cone. in both crashes, only the hockey puck experienced a force.
b the diagram doesnt tell you anything about the force on the cone. it only gives information about the force on the pucks.
c it was the same force in both crashes: the hockey puck changed speed by the same amount in each crash, so the force on the cone was the same each time.
d crash 1: the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.

Explanation:

According to Newton's third law of motion, when two objects interact, the forces they exert on each other are equal in magnitude and opposite in direction. In Crash 1, the black puck has more mass. When it crashes into the cone, according to the formula \(F = ma\) (where \(F\) is force, \(m\) is mass, and \(a\) is acceleration, assuming acceleration change in the crash situation), a larger - mass object (black puck) will cause a larger force on the cone (because force is related to the change in momentum, and for a given change in velocity during the crash, \(F=\frac{\Delta p}{\Delta t}=\frac{m\Delta v}{\Delta t}\), more mass means more force).

Answer:

d. Crash 1: the force on the black hockey puck was stronger in this crash, so the force on the cone was also stronger.