Newton's 2nd Law

The standard unit for force is...

• m/s
• m/s²
• N
• kg

With a constant force, acceleration and mass are...

• directly proportional
• inversely proportional
• not related

Tags

NGSS.MS-PS2-2

With a constant mass, force and acceleration are...

• directly proportional
• inversely proportional
• not related

Friction always opposes...

• weight.
• applied force.
• direction of motion.
• a push or pull.

The equation for force is...

• mass × acceleration due to gravity
• velocity × time
• acceleration × force
• mass × acceleration

A boy pulls a box attached to a rope with 5 N to the right. A girl pushes the same box with 7 N to the right. What is the net force acting on the box?

• 2 N
• 5 N
• 7 N
• 12 N

A boy pushes a box to the right with 10 N. A girl pushes the same box to the left with 8 N. What is the net force acting on the box?

• 2 N to the right
• 18 N to the right
• 2 N to the left
• 18 N to the left

A dog pulls a 4.0 kg wagon with 10 N of force. What is the acceleration of the wagon?

• 0.0 m/s²
• 2.5 m/s²
• 4.0 m/s²
• 10 m/s²

The best equation for determining weight is...

• W = mass x force of gravity
• W = force of gravity x acceleration
• W = mass x acceleration of gravity
• W = force of gravity x newtons

Previously, 10 m/s² was used for acceleration due to gravity. Because of weight, acceleration due to gravity is now...

• 0.0 m/s²
• 2.0 m/s²
• 9.8 m/s²
• 20 m/s²