Equal and Unequal Forces

A student pulls a wagon, and it begins to move in the direction shown. Describe the forces acting on the wagon.

• The forces are equal because the wagon starts to move.

• The forces are unequal because the wagon starts to move.

• The force of gravity is pulling the wagon forward.

• The metal parts of the wagon are attracted to a magnet.

Tags

NGSS.MS-PS2-2

Which type of force will not change the motion of an object?

• Gravitational forces

• Unequal forces

• Magnetic forces

• Equal forces

Two students want to move a cart full of bricks. Which actions will make moving the cart in one direction the easiest for the students?

• Student 1 pushes the cart to the right, and student 2 pulls the cart to the right.

• Student 1 pulls the cart to the left, and student 2 pulls the cart to the right.

• Student 1 pushes the cart to the right, and student 2 pushes the cart to the left.

• Student 1 pulls the cart to the left, and student 2 pushes the cart downward.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Look at the image. Describe the motion of the box shown based on the forces that are being applied to it.

• The box will move toward the right.

• The box will move toward the left.

• The box will not move at all.

• The box will move down toward Earth.

Tags

NGSS.MS-PS2-2

5. A class is using the setup shown to test this hypothesis: The shorter the stack of books becomes, the shorter the distance the toy truck will roll. What is ONE more piece of equipment needed to test the hypothesis AND how can the hypothesis be tested?

• A ruler to measure the distance the truck rolls.

• A stopwatch to time how long the truck rolls.

• A scale to weigh the truck.

• A protractor to measure the angle of the ramp.

Tags

NGSS.MS-PS2-2

A tennis player just hit the ball with their racquet. Select the TWO statements that are true.

• A. The player applied unequal force, which did not transfer energy or change the pattern of motion.

• B. The player applied equal force, which caused a change in the pattern of motion.

• C. The player applied unequal force, which caused a change in the pattern of motion.

• D. The player applied equal force, which caused a transfer of energy.

• E. The player applied unequal force, which caused a transfer of energy.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-5

Look at the image of tug-of-war game. Select the TWO statements that are true about this tug-of-war game.

• The forces are equal.

• The forces are unequal.

• The players will move toward the left.

• The players will move toward the right.

• The players will not move.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

When a student kicks a soccer ball, they transfer ________________ to make the ball move.

• energy

• mass

• color

• shape

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What is the expected outcome when varying the amount of force applied to a ball on a ramp in an experiment?

• The ball will roll the same distance regardless of the force applied.

• The ball will roll a shorter distance with more force applied.

• The ball will roll a longer distance with more force applied.

• The ball will not roll at all with any amount of force applied.

Tags

NGSS.MS-PS2-2

Some students launched an air rocket several times. Each time they increased the number of pumps before releasing the rocket. What is the dependent variable they should collect in order to test how the number of pumps affects the movement of the rocket?

• The height the rocket rises each time.

• The width of the rocket on its base.

• The distance from the pump to the rocket.

• The volume of air the pump holds.

Tags

NGSS.MS-PS2-2