CH 3 Test Review Physics

What is Newton's First Law

• F=ma

• Every action has an equal and opposite reaction

• Friction

• An object at rest stays at rest, an object in motion stays in motion.

What is the net force?

• 40 N left

• 400 N right

• 0 N Balanced

• 40 N right

Tags

NGSS.MS-PS2-2

A 20 kg bike accelerates at 10 m/s2. What was the force?

• 25 Newtons

• 20 Newtons

• 200 Newtons

• 10 Newtons

Tags

NGSS.MS-PS2-2

What units do we Measure Force in?

• Newtons

• m/s2

• Kilogram

• m/s

What is force?

• A push exerted on an object

• A push or pull exerted on an object

• A pull exerted on an object

• Nothing

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is Newton's 2nd Law?

• F=ma

• Every action has an equal and opposite reaction

• An object at rest stays at rest, an object in motion stays in motion.

• Friction

Tags

NGSS.MS-PS2-2

friction is a force that acts 

• in the same direction as the motion
• opposite to the direction of the motion
• opposite to the applied forces
• the same direction as the applied force

When a ball increases in speed by the same amount each second, its acceleration

• increases each second

• decreases each second

• is constant

• fluctuates

Your car undergoes acceleration when it

• gains speed

• decreases speed

• changes direction

• all of the above

The acceleration of a rain drop that falls at a constant velocity

• is zero

• is directed downward

• decreases over time

• increases over time