Scalars, Vectors, Distance, Displacement, Speed and Velociity

Sally walks her dog 3.5 miles North then 2.1 miles West.  What is his displacement?

• 2.7 miles NW

• 4.08 miles NW

• 5.6 miles NW

• 7.84 miles NW

When calculating displacements, which situation would you have to use the a²+b²=c² method?

• Traveling North

• Traveling North, then South

• Traveling East then West

• Traveling North then East

A boy is standing still on top of a mountain. If someone will describe the boy's motion, which of the following is correct?

• The boy is stationary on the mountain but in motion relative to the Earth.
• The boy is moving up the mountain at a constant speed.
• The boy is falling down the mountain due to gravity.
• The boy is rotating around the Earth while standing still.

Tags

NGSS.MS-PS2-2

What do you call quantities and measurements that ONLY have magnitude?

• Vectors
• Velocity

• Scalars
• Displacement

What do you call quantities and measurements that have magnitude and direction?

• Vectors
• Distance

• Speed

• Scalars

Which of the following is an example of distance?

• 10 meters

• 10 meters, East

• • + 10 meters

• 10 meters to the right

Which of the following is an example of displacement?

• 10 units

• 10 centimeters

• 10 centimeters, North

• 0 centimeters

Starting from the origin, a person walks 8 km east during the first day, and 5 km west the next day. What is the net displacement of the person from the initial point in two days?

• 8 km east

• 3 km east

• 10 km west

• 5 km west

What is the quantity that represents the shortest straight line from start to end?

• Displacement

• Velocity

• Distance

• Acceleration

Jerry walked from home to school, then from the school to the park. What is his total displacement?

• -2 km

• -5 km

• 3 km

• 8 km