7. Mateo and Jackie were on a playground rolling some different sized balls to get them to crash. They used a tennis ball (the same mass) in both crashes. They tried two Soccer balls-a pink one (more
mass) for Crash l the and a blue one (less mass) for Crash 2.

The answer is A

This is because since the pink soccer ball has a larger mass than the smaller blue soccer ball, it would take a stronger force to move it than it would for blue soccer ball.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.