Unit 2 Motion Study Guide

A man walks 12.4 km East in 3 hours and then 9.6 km West in 2.5 hour then stops. What is the man's displacement for the whole journey?

• 2.8 km East

• 2.8 km West

• 11 km East

• 1.4 km West

Two swimmers, A and B, swim laps in a straight 50-meter pool. The table shows the distance and direction they swim during each of their two laps. Use the information in the table to determine each swimmer’s total distance and displacement after both laps.

• • Swimmer A: 100 m distance, 0 m displacement

  • Swimmer B: 100 m distance, 100 m displacement

• • Swimmer A: 100 m distance, 50 m displacement

  • Swimmer B: 100 m distance, 100 m displacement

• • Swimmer A: 0 m distance, 100 m displacement

  • Swimmer B: 100 m distance, 50 m displacement

• • Swimmer A: 100 m distance, 100 m displacement

  • Swimmer B: 50 m distance, 0 m displacement

The graph shows the position of a car in motion along an east-west road over a period of 10 minutes. The car’s position is recorded at 1-minute intervals. At t = 0s, the car’s position is at the starting point. What is the total displacement traveled by the car after 10 minutes?

• Displacement = 0 m

• Displacement = 400 m

• Displacement = 1200 m

• Displacement = 10 m

A hiker walked a mapped trail its entire distance, then headed to his cabin to rest. What was the hikers displacement?

• 4 km

• 4 km, North

• 10 km

• 10 km, North

A hiker walked a mapped trail its entire distance, then headed to his cabin to rest. What was the hiker's distance hiked?

• 22 km

• 22 km, North

• 33 km

• 33 km, North

An object moves away from a motion detector with a constant speed. Which graph best represents the motion of the object?

• A

• B

• C

• D

An object moves towards a motion detector with a constant speed. Which graph best represents the motion of the object?

• A

• B

• C

• D

What total distance does the object move during the first 3 seconds?

• 0 m

• 4 m

• 8 m

• 12 m

What is the acceleration from 3 to 5 seconds?

• 0 m/s²

• 0.57 m/s²

• 1.75 m/s²

• 2.3 m/s²

Tags

NGSS.HS-PS2-1

What is the velocity in meters per second of a runner who runs exactly 110 m toward the beach in 72 seconds?

• 0.654 m/s toward the beach

• 1.53 m/s toward the beach

• 15.3 m/s toward the beach

• 7920 m/s toward the beach