Units 1 and 2 review

Who was the ancient scientist we discussed in Unit 1 (catapult) who created various siege machines to defend his Greek city?

• Aristotle

• Archimedes of Syracuse

• Anaxarchus

• Eudemus of Rhodes

• Zeno of Sidon

Which machine did Archimedes create? (Select all that apply)

• The claw

• The catapult

• The ballista

• Series of mirrors that lit ships aflame

• The tower

How is velocity different from speed?

• Velocity incorporates direction as well as speed

• Velocity uses feet per second instead of meters per second

• Velocity measures different kinds of objects

• Speed can be negative, and velocity cannot be negative

• None of the above

Velocity can be negative

• True

• False

What are the units for velocity?

• Miles per hour

• Meters per second

• Feet per second

• Meters per hour

• None of the above

Tags

NGSS.MS-PS3-1

Mr. K runs in a big circle, and runs 100 meters total in 10 seconds. He ends up in the same place as he started. What was his displacement?

• 100 m

• 10 m

• 1000 m

• 0 m

• None of the above

Newton's 1st Law - An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by...

Tags

NGSS.MS-PS2-2

Newton's 2nd Law - If a 2 kg ball receives a continuous push of 1,000 Newtons, what will its acceleration be?

• 2,000 m/s squared

• 500 m/s squared

• .002 m/s squared

• 1,000 m/s squared

• None of the above

Tags

NGSS.HS-PS2-1

What phenomenon is explained by Newton's 3rd Law? (Every action has an equal and opposite reaction)

• A rocket pushing itself upward with chemical propellant engines

• A human vocal chord vibrating to make a sound

• A koala sleeping

• A bridge holding up weight

• None of the above

Tags

NGSS.MS-PS2-1

An object has 15,000 Joules of kinetic energy. It is moving at 100 m/s. What is its mass?

• 2 kg

• 30 kg

• 12 kg

• 300 kg

• None of the above