Law of Motion

What Unit do we Measure Force in?

• Newtons

• Joules

• Kilogram

• Work

A 20-N net force acts on an object with a mass of 2.0 kg. What is the object's acceleration?

• 10 m/s²

• 0.1 m/s²

• 40 m/s²

• 22 m/s²

Tags

NGSS.MS-PS2-2

What is the equation for Newton's 2nd law?

• a = bc

• F = m/a

• F = ma

• a = b/c

Tags

NGSS.MS-PS2-2

When mass is 10 kg, acceleration is 2 m/s/s, what is force?
F = ma

• 5 N

• 20 N

• 8 N

• 12 N

Tags

NGSS.MS-PS2-2

A 50-kg crate is pushed with a horizontal acceleration of 20 m/s². What net force is acting on the crate?

• 2.5 N

• 0.4 N

• 1000 N

• 30 N

Tags

NGSS.MS-PS2-2

What are the units of force?

• kg

• N

• m/s

• m/s²

The larger the mass you have the _____ force you need to change its motion.

• more

• less

Tags

NGSS.MS-PS2-2

____ = mass x acceleration

Tags

NGSS.MS-PS2-2

If the mass of an object is 5 kg, and the acceleration is 2 m/s². What is the force?

• 10 N

• 7 N

• 3 N

• 12 N

Tags

NGSS.MS-PS2-2

If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration? (F=ma)

• The one with a mass of .78 kg will have the greatest acceleration.

• The one with a mass of .52 kg will have the greatest acceleration.

• They will both accelerate at the same rate.

Tags

NGSS.MS-PS2-2