Newton's 1st and 2nd Law Review

Which unit is used to measure speed?

• Newtons (N)

• Meters (m)

• Meters per second (m/s)

• Kilograms (kg)

Tags

NGSS.MS-PS3-1

What does Newton's first law state about an object's motion?

• An object's motion can change without any force acting on it.

• A force is needed to keep an object moving.

• An object's motion cannot change unless a force acts on it.

• Friction is the only force affecting an object's motion.

According to Newton's second law, what happens to the acceleration of an object if the force applied to it increases?

• The acceleration decreases

• The acceleration remains the same

• The acceleration increases

• The acceleration becomes negative

Tags

NGSS.MS-PS2-2

Newton's second law is summarized by which equation?

Tags

NGSS.MS-PS2-2

What is the unit used to measure force?

• Newtons (N)

• Kilograms (kg)

• Meters per second (m/s)

• Joules (J)

What force is responsible for slowing down a rolling ball on the ground?

• Gravity

• Magnetism

• Friction

• Electromagnetic Force

What term describes the change in speed per unit of time?

• Mass

• Friction

• Acceleration

• Force

When forces acting on an object are balanced, what happens to the object's motion?

• The object accelerates

• The object moves in a circular path

• The object slows down

• The object's motion remains unchanged

Which law of motion states that the force required to accelerate an object is directly proportional to its mass?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• None of these

Tags

NGSS.MS-PS2-2

What is the unit for measuring mass?

• Newtons (N)

• Kilograms (kg)

• Meters per second (m/s)

• Joules (J)