HPS Semester 2 Exam Review

What is the slope of a "d vs t" graph

• displacement

• velocity

• acceleration

• torque

• 25 kg

• 40 N

• 245 N

• 40 kg

Refer to the v vs t graph. What is the acceleration during the time period "a1" (the green shaded zone)?

• Zero

• Unable to determine from this graph

Tags

NGSS.MS-PS3-1

Refer to the v vs t graph. What is the acceleration during the time period "a2" (the red shaded zone)?

• Zero

• Unable to determine from this graph

Tags

NGSS.HS-PS2-1

During which interval is the object not moving?

• B to C
• C to D
• D to E
• only at point A

Which likely has the most inertia?

• Mr. Mariotti

• Mr. Mariotti's 9 year old daughter

• Mr. Mariotti's car

• Mr. Mariotti's kayak

Tags

NGSS.MS-PS2-2

The four forces acting on an airplane are balanced. During which situation would you expect this occur?

• At the gate with the engines turned off (no thrust)

• As the aircraft is accelerating down the runway for takeoff

• While the aircraft is cruising in level flight at constant velocity at 30,000 feet

• During the landing roll as the pilot applies the brakes to "decelerate" the aircraft...or was we say in Physics class...accelerate in the negative direction.

Two skydivers jump out a plane at the same time...

• the heavier (more massive) jumper falls faster since their F=mg (weight) is larger

• the jumpers accelerate toward the earth at the same rate until they reach "terminal velocity" where the drag balances the weight

• the jumpers experience increasing acceleration since Earth's gravitational field is much weaker at altitude and gains strength as they fall. The "g" forces will overwhelm them if they don't pull their ripcords after a few seconds.

• I gotta be honest - I just want school to be over and for summer to start!

Tags

NGSS.MS-PS2-4

Which is an example of heat convection?

• You hold a mug full of hot cocoa and it warms your hand

• Hot air inflates a hot air balloon

• Ironing clothes

• Ultraviolet radiation from the sun heats up sand at the beach

• unable to determine from the information provided

• 24.5 m/s

• 28 m/s

• 784 m/s

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-2

NGSS.MS-PS3-5