Force and Motion(Practice)

A student designs an experiment to test the effects of the width of a piece of elastic on the elastic's ability to stretch. The student selects four pieces of elastic with different widths but the same length. The student then attaches blocks with different masses to the pieces of elastic. The results of the student's experiment are shown. What should the student do to improve this experiment? (5.6D)

• Use blocks of equal mass on the four pieces of elasti

• Use more than four pieces of elastic and four blocks

• Use blocks with enough mass to cause the four pieces of elastic to break

• Use four pieces of elastic with different lengths but the same width

Tags

NGSS.MS-ETS1-1

NGSS.MS-PS2-2

Students design an experiment to determine how much force is needed to move blocks of wood of different masses slowly across a lab table. Which procedure should students include in their design? (5.6D)

• Conduct five trials, using a different scale to pull each block of wood

• 
  Conduct five trials, using a different table for each trial

• Conduct five trials, pulling a different side of each block each time

• 
  Conduct five trials, pulling each block of wood in the same way for each trial

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Students fill a cart with books. The cart has a handle on each end.

Which actions will make moving the cart in one direction easiest for the students?

• Student 1 pulls the cart to the let while Student 2 pulls the cart to the right.

• Student 1 pushes the cart to the right while Student 2 pushes the cart downward.

• 
  Student 1 pulls the cart to the left while Student 2 pushes the cart to the left.

• Student 1 pushes the cart to the right while Student 2 pulls the cart upward.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The picture shows an athlete hitting a ball with a tennis racquet.

What is the athlete demonstrating in the picture?

• Doing work by pushing the ball and changing its motion and position.

• Doing work by pulling the racquet and changing the ball's position but not its motion.

• Changing the position but not the motion of the ball.

• Changing the position and motion of the ball without doing any work.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS3-5

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.

• Add an additional mass.

• Increase the height of the ramp.

• Pull the scale with two hands.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2