Physics Classroom Newton's Laws

If you double the mass of an object with the same force apply on it, the acceleration will

• double
• cut in half
• the same
• zero

Tags

NGSS.MS-PS2-2

What kind(s) of objects have inertia?

• all objects with mass
• only objects at rest
• only objects in motion
• only objects whose motion is being changed

Which one needs a greater net force to move, a kilogram of feathers or a kilogram of iron? 

• feathers 
• iron
• same
• depends on their friction

Tags

NGSS.MS-PS2-2

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

• twice the force with which it was fired
• the same amount of force with which it was fired
• 1/2 the force with which it was fired
• zero, since no force is required to keep it moving. 

Tags

NGSS.MS-PS3-5

The acceleration produced by a net force on an object is

• inversely proportional to the mass of the object.
• directly proportional to the magnitude of the net force.
• in the same direction as the net force.
•  all of the above

Tags

NGSS.MS-PS2-2

A 10-kg brick and a 1-kg book are dropped in a vacuum. The force of gravity on the 10-kg brick is

• 10 times as much as the force on the 1-kg book
•  zero.
• the same as the force on the 1-kg book.
• none of the above

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A book weighs 4 N. When held at rest in your hands, the net force on the book is
 

• 0 N.
•  0.4 N.
•  4 N.
•  39 N.

Tags

NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s².  what was the net force

• 25 Newtons
• 20 Newtons
• 200 Newtons
• 10 Newtons

Tags

NGSS.MS-PS2-2

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• The cannon moving forward
• The cannonball moving forward
• The cannon moving backward
• The cannonball moving backward

Tags

NGSS.MS-PS2-1

Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?

• Newton's 1st Law
• Newton's 2nd Law 
• Newton's 3rd Law 
• Newton's Law of Biology