A 40-kg girl is running through the supermarket and jumps onto a stationary cart full of groceries that has a total mass of 80-kg. They roll away at a speed of 7 m/s. How fast must she have been running before the collision?

There is no graph to look at on here, but i shall explain them to you. a line graph is just in its title it’s a graph with a line running through the dots to show an increase or decrease. a bar graph is used to show how much or how little something is so a comparison. a scatter plot is used to graph points to tell the data. and i don’t know what a histogram is.

Answer(b) 60 miles per hour;

F  you double the  force, you double the acceleration, but  if  you double the  mass, you velocity. all bodies accelerate at the  same  rate regardless of size or  mass.