Test #4 - Motion and Force

Speed equals distance divided by ____.

• time

• velocity

• size

• motion

Tags

NGSS.MS-PS3-1

When you know both the speed and direction of an object’s motion, you know the _____.

• average speed of the object

• acceleration of the object

• distance the object has traveled

• velocity of the object

To determine the acceleration rate of an object, you must calculate the change in speed during each unit of ____.

• velocity

• time

• motion

• deceleration

If speed is measured in kilometers per hour and time is measured in hours, the unit of acceleration is ____.

• hours

• kilometers per hour

• kilometers per hour per hour

• kilometers

Average speed is ____.

• equivalent to velocity

• the rate at which an object is moving at a given instant

• the rate at which a slope changes

• the total distance traveled divided by the total time

If a bicyclist travels 30 kilometers in two hours, her average speed is ____.

• 30 km/h

• 60 km/h

• 15 km/h

• 2 km/h

Which of the following is the correct equation for acceleration?

• acceleration =

  (final speed - initial speed) x time

What happens when two forces act in the same direction?

• they cancel each other out

• the stronger one prevails

• they add up together

• their sum divided by two is the force

Tags

NGSS.MS-PS2-2

The tendency of an object to resist change in its motion is known as ____.

• mass

• inertia

• force

• balance

The greater the mass of an object, ____.

• the easier the object starts moving

• the greater its inertia

• the more balanced it is

• the more space it takes up

Tags

NGSS.MS-PS2-2