Physics Assessment

Some students were investigating the speed of a toy car they built. They performed two trials and recorded their data in the table below. What was the average speed of the toy car during the two trials to the nearest tenth of a m/s?

• A. 1.5 m/s

• B. 1.8 m/s

• C. 7.7 m/s

• D. 0.8 m/s

What is the difference between the velocity and the speed of an object?

• A. Velocity is the change in distance over time, while speed is the change in velocity over time.

• B. Velocity has a direction associated with it, while speed has no specific direction.

• C. Velocity has no direction associated with it, while speed has a specific direction.

• D. Velocity is the change in speed over time, while speed is the change in distance over time.

A car accelerates at a green light at the speed of 10 m/s for five seconds. Which of the following best describes the acceleration of the car?

• A. 2 m/s²

• B. 5 m/s²

• C. 10 m/s²

• D. 50 m/s²

A bus driver drove from Philadelphia to Washington D.C. He drove the first 100 km in 2 hours, the next 55 km in 1 hour, and the final 75 km in 2 hours. What is the average speed of the bus throughout the trip?

• 46 km/h

• 50 km/h

• 77 km/h

• 81 km/h

A cross country runner runs 4 km in 15 minutes. What can you calculate using this information?

• Acceleration

• Force

• Speed

• Velocity

Tags

NGSS.MS-PS3-1

You can find the speed on a distance-versus-time graph by finding the __________ of the line.

• Slope

• Intercept

• Curvature

• Area

It takes a fast swimmer about 25 seconds to complete a 50 meters freestyle. What is the speed of the swimmer?

• 2 meters per second

• 1.5 meters per second

• 2.5 meters per second

• 2.2 meters per second

Tags

NGSS.MS-PS3-1

What is your speed if you move 50 meters in 10 seconds?

• 5 meters per second

• 10 meters per second

• 15 meters per second

• 20 meters per second

Tags

NGSS.MS-PS3-1

A roller coaster car rapidly picks up speed as it rolls down a slope. As it starts down the slope, its speed is 4 m/s. But 3 seconds later, at the bottom of the slope, its speed is 22 m/s. What is its acceleration?

• 6 m/s²

• 7 m/s²

• 8 m/s²

• 9 m/s²

Tags

NGSS.MS-PS2-2

A car accelerates from an initial velocity of 3 m/s to a final velocity of 12 m/s in a time of 4 seconds. Calculate its acceleration.

• 2.25 m/s²

• 3 m/s²

• 4.5 m/s²

• 2 m/s²

Tags

NGSS.HS-PS2-1