Motion

Which to the following best describes an object with constant velocity?

• it is changing direction

• its acceleration is zero

• its acceleration is increasing

• its acceleration is negative

The graph below represents the motion of an object. According to the graph, as time increases, the velocity of the object ...

• increases

• remains the same

• decreases

The displacement-time graph below represents the motion of a cart initially moving forward along a straight line.  During which interval is the cart moving forward at constant speed?

• AB

• BC

• CD

• DE

Which graph best represents the motion of an object whose speed is increasing?

• 
• 
• 
• 

The distance-time graph below represents the position of an object moving in a straight line. What is the speed of the object during the time interval t = 2.0 seconds to t = 4.0 seconds?

• 10 m/s

• 0 m/s

• 5 m/s

• 7.5 m/s

Which of the following do you calculate when you divide the total distance traveled by the total travel time?

• average speed

• variable speed

• constant speed

• instantaneous speed

Which of the following is not used in calculating acceleration?

• initial velocity

• average speed

• time interval

• final velocity

In which of het following conditions does the car NOT accelerate?

• A car moves at 80 km/h on a flat, straight highway

• The car slows from 80 km/h to 35 km/h

• The car turns a corner

• The car speeds up from 35 km/h to 80 km/h

What is the tendency for an object to resist any change in its motion?

• Net Force

• Balanced Force

• Acceleration

• Inertia

Which of the following is a physical quantity that has a magnitude but no direction?

• Vector

• Resultant

• Scalar

• Frame of reference