8.6a

The forces acting an a toy car are shown.

In which direction will the race car move and with how much force?

• Right, 11 Newtons

• Left, 11 Newtons

• Right, 1 Newton

• Left, 1 Newton

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A diagram of the forces being applied to a box is provided. If the net force acting on the box is 10N toward the right, what is the magnitude of force applied by the boy pulling to the left? Record your answer below.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Provided is a diagram showing forces on a box. What is the net force on the box?

• 5 Newtons ->

• 5 Newtons <-

• 15 Newtons ->

• 15 Newtons <-

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following is an example of balanced forces acting upon an object?

• An apple falling from the branch of a tree

• A baseball accelerating away from a bat.

• A boulder sitting at the top of a mountain.

• An empty wagon rolling to a stop.

Provided is a diagram showing forces on a box. What is the net force on the box?

• 10 Newtons West

• 10 Newtons East

• 90 Newtons West

• 90 Newtons East

Tags

NGSS.MS-PS2-2

Which of the following vocab words help identify acceleration?

• velocity & time

• distance & time

• velocity & distance

• all of the above

Answer explanation

Velocity is distance and time plus a direction.

Acceleration is the change of direction or speed.

Distance and time alone doesn't show acceleration

If a car is moving in a straight line at a constant speed is the car subjected to balanced forces?

• True

• False

The arrows in the diagram below represent equal forces acting on balls that are resting on a table.

Which ball will accelerate if the forces are applied?

• Ball 1

• Ball 2

• Ball 3

• Ball 4

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Sometimes tectonic plates do not move easily past one another, and the plates become stuck. Forces build up, and when the plates finally move, tension is released, as shown below. The sudden movement of the plates is caused by -

• the mass of the plates

• the weight of the plates

• unbalance forces

• gravitational force

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3

A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?

• Balanced Forces, Constant Speed

• Balanced Forces, Acceleration

• Unbalanced Forces, Constant Speed

• Unbalanced Forces, Acceleration

Tags

NGSS.MS-PS2-2