Newton's First Law

This diagram can be used to indicate which of the following? (TWO correct answers)

• a object at rest

• an object moving at a constant velocity (speed)

• an object accelerating

• (Trick question -- there is only one correct answer)

• an object decelerating

An object following a straight-line path at a constant speed 

• has zero acceleration

• has no forces acting on it

• has a net force acting in the direction of motion

• none of these

A leftward force is applied to a crate to push it across the floor at a constant speed. Which is the correct force diagram?

• 
• 
• 
• 

Tags

NGSS.MS-PS2-2

Which way is the object moving?

• it's either not moving or moving at a constant speed due to balanced forces

• to the right

• to the bottom

• up

Tags

NGSS.MS-PS3-1

states that if the net force acting on an object is zero, the motion of the object will not change (object in motion stays in motion, object at rest stays at rest until an outside force acts on it)

• Newton's First Law

• Newton's Second Law

• Newton's Third Law

• Newton's Fourth Law

Objects tend to stay at rest unless acted upon by ______

• An inside force

• An outside force

• A balanced Force

Tags

NGSS.MS-PS2-2

If the forces acting on an object are balanced, then its motion will not change

• True

• False

Tags

NGSS.MS-PS2-2

If a ball is in motion, how do balanced forces effect it?

• it will slow the ball down

• the ball will speed up

• the ball will continue to move at a constant speed & in the same direction

• the ball will stop

Tags

NGSS.MS-PS2-2

Calculate the net force shown in the  diagram?

• 6 N

• 0 N

• 3 N

• 9N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Which of the following best describes Newton's First Law of Motion?

• An object will remain at rest or in uniform motion unless acted upon by a net external force.

• The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.

• For every action, there is an equal and opposite reaction.

• The force of gravity acts between all masses.