Newton's First Law

The law of inertia (Newton’s First Law) applies

• to both moving and nonmoving objects
• only to moving objects
• only to objects that are not moving

An object in motion tends to stay in motion unless an ___ force acts on it.

• unbalanced
• balanced

Tags

NGSS.MS-PS2-2

What is the net force on an object?

• the sum of all the forces on an object
• the negative forces on an object

Tags

NGSS.MS-PS2-2

Find the net force: 15 N to the right, and another 15 newtons to the right.

• 0 N Right
• 0 N Left
• 30 N Left
• 30 N Right

Tags

NGSS.MS-PS2-2

8 N to the left , and 4 N to the right. Find the net force. Is this balanced? 

• 12 N Right  No
• 4 N Left  No
• 12 N Right  Yes
• 4 N Left  Yes

Tags

NGSS.MS-PS2-2

You and your friend, are playing tug of war. Your friend pulls with a force of 55 N, to the rights. You pull with a force of 65 N, to the left. What is the net force on the rope?

• 10 n, to the left
• 20 N
• 10 N, to the left
• 10 N, to the right

Tags

NGSS.MS-PS2-2

Which one is balanced?

• top
• bottom
• both

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the net force?

• 5 N
• 45 N to the left
• 5 N to the right
• 45 N to the right

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The ______of an object tends to make the object resist being set into motion.

• mass
• force
• motion
• unbalanced forces 

Tags

NGSS.MS-PS2-2

Without a force to stop or slow a coasting object, the object will coast forever in a ______ line. 

• blue
• red
• straight
• vertical 

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2