Unit Test: Force and Motion

What is the difference between distance and displacement?

• Distance is the total length of the path traveled; displacement is the shortest straight-line distance with direction.

• Distance and displacement are the same concept.

• Displacement measures the total distance traveled regardless of direction.

• Distance is always greater than displacement.

Sadie walks 2.75 km to the store to buy some groceries. Then she takes the bus to the café, which is 5.23 km away. After having her coffee, she walks 3.25 km back home. What is the total distance that Sadie traveled?

• 8.98 km

• 10.50 km

• 12.75 km

• 11.23 km

Omar loves going to the lake on Sundays to feed the ducks after church. He wakes up and drives 4.25 miles north to the church, then drives 2.75 miles west to feed the ducks at the lake after church. What is his current displacement?

• 5.06 miles

• 4.75 miles

• 6.00 miles

• 3.50 miles

Jayden runs 30 m to the West. Then he turns around and walks 22 m to the East. What is his displacement?

• 22 m

• 30 m

• 8 m

• 52 m

Match the following types of speed to their correct definition.

• Speed that does not vary

• 
• Total distance traveled ÷ by total time

• 
• Speed at any given point in time

• 

Tags

NGSS.MS-PS3-1

Leroy is on a road trip across the country. He drives a total of 2,659 miles. It took him a total of 39 hours to get to California from North Carolina. What was his average speed?

• 68.18 miles per hour

• 80.26 miles per hour

• 75.13 miles per hour

• 55.77 miles per hour

Jacklyn is on a boat for 3.5 hours traveling at an average speed of 1.25 km/h. What distance does she cover?

• 4.4 km

• 2.8 km

• 4.8 km

• 0.36 km

Steve is training for a marathon. He runs 6.5 miles at a speed of 3.5 mph. How many hours was Steve running?

• 2.5 hr

• 3.2 hr

• 4.0 hr

• 1.9 hr

What is the difference between speed and velocity?

• Speed is a measure of distance; velocity is a measure of time.

• Speed can change direction; velocity cannot.

• Speed is always greater than velocity.

• Velocity includes direction while speed does not.

Match the following scenarios.

• Acceleration

• A car travels 180 kilometers in 3 hours on a highway.

• Speed

• A roller coaster starts from rest and reaches 30 m/s in 5 seconds as it goes down the first hill.

• Velocity

• A train moves north at 80 m/s.

Tags

NGSS.MS-PS3-1