Force & Motion (Practice 24-25)

A student wants to investigate how the force with which a ball is thrown affects how high of a splash it makes in a pool.

Which table BEST represents how the investigation should be set up?

• 
• 
• 
• 

Students conduct experiments to investigate friction. Which experiment will best test the effects of friction on objects?

• Drop two balls from the same height at the same time

• Roll two marbles on the carpet from the same starting point at the same time and with the same amount of force

• Roll three marbles across three different surfaces from the same stating point at the same time and with the same amount of force

• Release two balls from the top of a ramp at the same time

Students investigate force. The masses they use begin at rest on the ramp The setup the students use is shown.

Which change will reduce the amount of force needed to move the masses?

• Decrease the height of the ramp

• Increase the height of the ramp

• Add an additional mass

• Pull the spring scale with two hands

A student conducts the investigation show in the diagram. In this experiment a paper cup hangs from a string tied to a single uncooked spaghetti noodle. The student measures and records the mas of a penny. The student than adds pennies to the paper cup one at a time.

Which question is the student most likely trying to answer with this investigation?

• How many spaghetti noodles will it take to hold up the mass of a penny?

• How much force will it take to break the spaghetti noodle?

• How long should the string that holds the paper cup be in order to support the greatest mass of pennies?

• How does the distance between the two chairs affect the amount of force it takes for the spaghetti noodle to break?