Motion Quiz 2-24

What is SI units for force ?

• Grams g()
• Hectogram (Hg)
• Newtons (N)
• Meters (m)

What do the arrows tell you?

• strength
• direction and strength
• direction
• speed

When dropped from a height, what causes a feather not to fall at 9.8 m/s?

• Not enough mass
• Air Resistance
• Gravity not pulling as hard
• Wind

If a man and woman push each other at both 9 N, what is the net force?

• 81 N
• 18 N
• 1 N
• 0 N

Tags

NGSS.MS-PS2-1

If two forces act on an object in the same direction, the net force is the _____________

• the difference between the two forces
• the sum of the two forces
• Only one of the forces acts on the object
• DOOMSDAY!

Tags

NGSS.MS-PS2-2

The force that exists between two MOVING objects is called

• potential friction
• static friction
• kinetic friction
• gravity

A man has a mass of 80 kg on the earth.  What will his mass be on the moon? (assume gravity on the moon is ~2 (1.6 m/s²)

• 160
• 40
• 80
• none of these

A man has a mass of 80 kg on the earth.  What will his weight (F_g) be on the moon? (assume gravity on the moon is ~2 (1.6 m/s²)

• 160
• 40
• 80
• none of these

A push or a pull. 

• Gravity
• Friction 
• Force

Will not change an object's motion.

• Unbalanced Forces
• Balanced Forces