PRACTICE: Newton's Laws of Motion

What is the speed and direction of an object referred to as?

• Force

• Velocity

• Acceleration

• Magnitude

What is the SI unit for acceleration?

• meters per second

• newtons

• meters per second squared

• kilograms

Tags

NGSS.HS-PS2-1

What is a force described as?

• A change in mass

• A change in direction

• A change in speed

• A push or pull that can change velocity and direction

Tags

NGSS.HS-PS2-1

What does Newton's Second Law of Motion state?

• The acceleration of an object equals the net force acting on the object multiplied by the object's speed

• The acceleration of an object equals the net force acting on the object divided by the object's speed

• The acceleration of an object equals the net force acting on the object divided by the object's mass

• The acceleration of an object equals the net force acting on the object multiplied by the object's mass

What is friction?

• A force that increases the sliding motion of two surfaces

• A force that decreases the sliding motion of two surfaces

• A force that has no effect on the sliding motion of two surfaces

• A force that changes the direction of two surfaces

What is a free-body diagram used for?

• To understand systems of objects with any amount of applied forces

• To understand systems of objects with only one applied force

• To understand systems of objects with no applied forces

• To understand systems of objects with balanced forces

Tags

NGSS.MS-PS2-2

What is the sum of all the forces acting on an object called?

• Contact force

• Balanced force

• Frictional force

• Net force

Tags

NGSS.MS-PS2-2

What does Newton's first law of motion state?

• An object in motion will stop moving, and an object at rest will start moving without any force

• An object in motion will stay in motion, and an object at rest will stay at rest unless acted upon by a force

• An object in motion will change direction, and an object at rest will start moving in the opposite direction

• An object in motion will change speed, and an object at rest will start moving at a constant speed

What are balanced forces?

• Forces that have no effect on the motion of an object

• Forces that increase the motion of an object

• Forces that decrease the motion of an object

• Forces that cancel each other out

What are unbalanced forces?

• Forces that cancel each other out

• Forces that decrease the motion of an object

• Forces that have no effect on the motion of an object

• Forces that increase the motion of an object

Tags

NGSS.MS-PS2-2