Motion Laws Concepts

All the laws apply, but.... Hitting a baseball with a bat, causing ball to be hurled outward, is a good example of ____.

• Law of Inertia (1st Law)

• Law of Mass and Acceleration (2nd law)

• Law of Action and reaction or Newton's 3rd Law)

F=MA

An object of mass 20 kg is accelerated upward at 4 m/s². What net force is required?

• 80 N

• 5 N

• 16N

• 0.2 N

Which is a unit of mass or inertia?

• mph

• m/s²

• kg-m/s²

• kilogram, kg

Unbalanced forces are present when

• there is a   zero net force
• velocity does not change
• an object accelerates
• an object is at rest

The ____ of an object is the gravitational force exerted on an object.

• mass
• weight
• gravity
• newtons

The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.

• gravity
• friction
• a strong force
• electromagnetic force

Tags

NGSS.MS-ESS1-2

NGSS.MS-PS2-4

The combination of all the forces acting on an object is the...

• net force
• action force
• reaction force
• balance force

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A cannonball with a mass of 0.5 kg is fired with an acceleration of 10 m/sec/sec. What net force was applied to ball?

• 50 Newtons

• 5 Newtons

• 20 Newtons

• 9.5 Newtons

You push on a tree with 20 N of force. If the tree doesn't move, the tree is pushing back on you with _____of force.

• 20N 
• 40N 
• 10N 
• 70N

Tags

NGSS.MS-PS2-1

Which has more Inertia?

• Truck

• Ant

• A cat

• A skateboard