IB SEHS

when preparing to throw a javelin, the arm is straight behind the body. What muscle is acting as the effort/force

• wrist extensors

• tricep

• bicep

• deltoid

What type of lever?

• 1st Class

• 2nd Class

• 3rd Class

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What type of lever?

• 1st Class

• 2nd Class

• 3rd Class

Is this person's center of mass changing throughout this timelapse?

• Yes

• No

What is momentum?

• The energy an object has when above the surface of the Earth

• The rate of change of velocity with time

• The rate of change of distance with time

• Velocity times the mass of an object.

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

Which of the following is a unit for acceleration?

• km/s

• m/s²

• mi/hr

• ft

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

• car

• bike

• they are equal

• cannot determine using the info provided

Tags

NGSS.MS-PS2-1

An object with a mass of 2000 kg at rest has what momentum?

• 2000 kg m/sec

• 0 kg m/sec

• 2000 kg

• 2000 m/sec

Tags

NGSS.HS-PS2-2

Force = Mass x Acceleration

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Newton's 4th Law

The force that opposes motion between two surfaces in contact with each other.

• inertia

• friction

• momentum

• gravity

Tags

NGSS.MS-PS2-2