8.6b

The graph shows the distance traveled by a ball over a certain amount of time. According to the graph, between 2 and 4 seconds the ball was (click the image to enlarge it)-

• traveling at a constant speed.

• increasing its speed.

• changing its direction.

• remaining at rest.

Which of the following examples accurately describes an object that is accelerating?

• A ball sitting motionless on the floor.

• An airplane moving at 500 kilometers per hour.

• A car slows down to turn a sharp corner.

• A bike moving backward at 3 meters per second.

Tags

NGSS.MS-PS2-2

Which of the following graphs displays the data of an object that is accelerating?

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Tags

NGSS.MS-PS3-1

If a car is moving on a highway at 70 kilometers per hour, going south, and then turns to travel 70 kilometers per hour, going east, what happens to its speed and velocity?

• Speed - changing, Velocity - constant

• Speed - constant, Velocity - changing

• Speed - constant, Velocity - constant

• Speed - changing, Velocity - changing

Which measurements are necessary for determining both the speed and velocity of a moving object?

• Distance, time, and direction

• Direction, displacement, and distance

• Distance, direction, and acceleration

• Direction, time, and acceleration

The following data describes the motion of a car over a three minute period. Which of the following statements regarding the car’s motion is true? (Click the image to enlarge it)

• The velocity of the car changed, but not the speed.

• The speed of the car changed, but not the velocity.

• The velocity and the speed of the car changed.

• The velocity and the speed of the car stayed the same.

Tags

NGSS.MS-PS3-1