Physical Science Concepts in Action Chapter 7

A 0.20-kilogram softball travels 97 meters (m) south for 4.5 seconds (s).  What piece of information distinguishes the velocity from the speed of the ball?

• The ball went south.
• The ball flew for 4.5 s.
• The ball traveled 97 m.
• The ball has a mass of 0.20 kg.

Jeremy walked at an average rate of speed of 3 km/h.  How far did Jeremy walk in 30 minutes?

• 0.1 km
• 1.5 km
• 10 km
• 90 m

The graph below plots velocity and time.  Which time interval shows a constant velocity and no acceleration?

• 0 to 2 seconds
• 2 to 3 seconds
• 3 to 4 seconds
• 0 to 4 seconds

Tags

NGSS.MS-PS3-1

A school bus moves past a parked car at a speed of 30 km/h.  Which of the following best describes the observation made by a passenger on the bus?

• The car appears to be moving 30 km/h in the same direction as the bus.
• The car appears to be moving 30 km/h in the opposite direction of the bus.
• The car appears to be moving 15 km/h in the same direction as the bus.
• The car appears to be moving 15 km/h in the opposite direction of the bus.

Over a period of 2.50 seconds, a speedboat accelerates from 8.5 m/s to 46.5 m/s.  What is the acceleration of the speedboat?

• -28 m/s²
• 28 m/s²
• -15.2 m/s²
• 15.2 m/s²

Tags

NGSS.HS-PS2-1

Bob walks 2 blocks east, 4 blocks south, and 2 blocks west.  What is his displacement?

• 4 blocks south
• 4 blocks north
• 2 blocks south, 2 blocks east
• 4 blocks south, 2 blocks east

Bob walks 2 blocks east, 4 blocks south, and 2 blocks west.  What distance did Bob travel?

• 2 blocks
• 4 blocks
• 6 blocks
• 8 blocks

A class measured the velocity over time of a rolling ball relative to the surface it traveled on.  If the same acceleration were maintained over time, what velocity would the ball have relative to the surface it traveled on after fifteen seconds, in meters per second (m/s)?

• 3.0 m/s
• 5.0 m/s
• 7.5 m/s
• 12.5 m/s

Tags

NGSS.HS-PS2-1

The chart below represents the change in velocity for four different trains.  If it took 5.38 seconds to reach the final velocity, which train had the greatest acceleration?

• W
• X
• Y
• Z

Tags

NGSS.HS-PS2-1

Which graph best represents a constant acceleration?

• A
• B
• C
• D

Tags

NGSS.HS-PS2-1