Physical Science Review - Physics

If Bob walks 2 blocks east, 4 blocks south, and 2 blocks west, what is his displacement?

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

If Bob walks 2 blocks east, 4 blocks south, and 2 blocks west, what distance has he traveled?

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

What is the motion represented in the graphs?

• the object is changing velocity during the entire time
• object is moving at constant velocity the entire time
• object changes velocity then moves at constant velocity
• object is not moving during any time interval

Which statement is true about an object in free fall? Assume negligible air resistance.

• Object has constant velocity
• object has constant acceleration
• acceleration of object increase as it falls
• velocity decreases as acceleration decreases as it falls

How much does a 125.0kg object weigh on Earth?

• 784.0 N
• 12.76 N
• 1113 N
• 1225 N

Brakes stop/slow a car, shoes/pad press against a disk/drum. What type of frictional force?

• Fluid
• Rolling
• Sliding
• Static

When a driver applies brakes quickly, why does a book on the seat keep moving forward?

• Gravity pushes the book forward
• No frictional force acts on the book
• Brakes apply force only to the car, but not to the book
• Book accelerates in direction of applied force

Which statement is true about the relationship shown?

• There is an inverse relationship between force and mass
• Acceleration is equal to the slope of the line
• Acceleration increases as mass increases
• Mass of object is not related to force

If you push a book across a table, which of the following describes the reaction force?

• Book pushes on the table
• Book pushes on you
• Table pushes on book
• You push the table

What phase change occurs during segment IV of the graph?

• solid to liquid
• solid to gas
• liquid to gas
• liquid to solid