Newton's Laws (7th Grade) Question Preview (ID: 61667)


Introductory Level Practice Of Newton's Laws Of Motion. TEACHERS: click here for quick copy question ID numbers.

Newton's first law of motion explains that
a) Unbalanced forces change motion.
b) The amount of force on an object is caused by mass and acceleration.
c) Forces happen in pairs.
d)

Which force will change an object from at rest to motion?
a) balanced force
b) unbalanced force
c)
d)

A bicycle goes around a curve at a constant speed. How do you know a force was applied?
a) The mass changed.
b) The speed changed.
c) The direction changed.
d) Force stayed the same.

Which of Newton's laws explains that an object at rest stays at rest unless an unbalanced force acts on it?
a) First law
b) Second law
c) Third law
d) All of the laws.

According to Newton's first law the speed of an object will
a) stay the same at all times.
b) stay the same until a force acts on the object.
c) change only if direction changes.
d) depend on its mass.

A new washer and dryer have arrived. The dryer has half the mass. You push both with the same force. Which one will have more acceleration?
a) They will have the same acceleration.
b) The dryer will accelerate more.
c) The washer will accelerate more.
d)

Newton's second law of motion explains that
a) Forces happen in pairs.
b) Motion, direction and speed depend on whether forces are balanced or not balanced.
c) The amount of force on an object is caused by mass and acceleration.
d)

Newton's third law of motion explains that
a) Motion, direction and speed depend on whether forces are balanced or not balanced.
b) Forces happen in pairs.
c) The amount of force on an object is caused by mass and acceleration.
d)

A new washer and dryer have arrived. The dryer has half the mass. What force will cause them to move with the same acceleration?
a) Push the washer with twice the force used on the dryer.
b) Push the dryer with twice the force used on the washer.
c) Push the washer with half the force used on the dryer.
d)

If you push on desk with 60 newtons of force, how much force will the desk push on you?
a) 5 newtons
b) 30 newtons
c) 45 newtons
d) 60 newtons

According to Newton's third law when you push an object the direction of the forces is...
a) opposite.
b) the same direction.
c)
d)

Two go carts are moving with the same force. The go cart in lane 1 is accelerating faster. According to Newton's second law why is this happening?
a) Go cart 1 has more mass.
b) Go cart 1 has less mass.
c) Go carts 1 and 2 have the same mass.
d)

What is the unit for force?
a) newtons (N)
b) meters over seconds squared (m/s²)
c) kilograms (kg)
d) meters over seconds (m/s)

What is the unit for acceleration?
a) newtons (N)
b) meters over seconds squared (m/s²)
c) kilograms (kg)
d) meters over seconds (m/s)

What is the unit for mass?
a) newtons (N)
b) meters over seconds squared (m/s²)
c) kilograms (kg)
d) meters over seconds (m/s)

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