Lesson 6.1 Assignment

When a hockey puck is struck with a hockey stick, a(n) ​ (a)   acts on the puck and the puck ​ (b)   .

• unbalanced force
• balanced force
• accelerates
• moves at a constant speed

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The combination of forces acting on an object is known as the ___ force.

Tags

NGSS.MS-PS2-2

The acceleration of an object is directly proportional to the net force acting on it. This means that, as the net force acting on the object increases, the acceleration of the object ​ ​ (a)  

• increases
• decreases
• remains constant

Tags

NGSS.MS-PS2-2

Circle the letter of each statement about force and acceleration that is true.

• a. Balanced forces cause constant acceleration.

• b. The forces acting on an object at rest are unbalanced.

• c. A net force acting on an object causes acceleration.

• d. Force is not required for an object to accelerate.

Tags

NGSS.MS-PS2-2

Two shopping carts of equal mass are pushed by two different people. One cart accelerates three times as fast as the other cart. Which of the following correctly describes the forces acting on each cart?

• Both carts experience the same net force.

• One cart experiences twice as much net force as the other.

• One cart experiences three times as much net force as the other.

• One cart experiences half as much net force as the other.

Tags

NGSS.MS-PS2-2

Circle the letter of the type of force that causes acceleration.

• a. balanced

• b. negligible

• c. zero

• d. unbalanced

Tags

NGSS.MS-PS2-2

True or False: If an object is accelerating, the forces acting on it are unbalanced.

• True

• False

Tags

NGSS.MS-PS2-2

True or False: An object in motion will always eventually stop because everything naturally wants to be at rest.

• True

• False

What effect do unbalanced forces have on an object?

• Decelerate

• Maintain constant speed

• Accelerate

• Remain stationary

Tags

NGSS.MS-PS2-2

What condition is an object at rest in when balanced forces act on it?

• Unbalanced

• In motion

• Equilibrium

• Acceleration