Exploring Speed, Velocity, and Acceleration Concepts

The video tutorial covers the concepts of speed, velocity, and acceleration. It begins with an introduction to these types of motion, explaining speed as the change in distance over time and velocity as speed with a specified direction. The tutorial includes practice problems to illustrate these concepts. It also discusses how velocities can be added together and provides real-life examples, such as a plane flying with a tailwind. Finally, the video introduces acceleration as the change in velocity over time, explaining how to calculate it and providing practice problems to reinforce learning.

What is the formula for calculating speed?

• Distance multiplied by time

• Distance divided by time

• Time divided by distance

• Speed divided by distance

Tags

NGSS.MS-PS3-1

Which of the following is an example of instantaneous speed?

• The speed of a car over a 2-hour trip

• The speed of a runner at the finish line

• The average speed of a cyclist over a race

• The speed of a plane during takeoff

How does velocity differ from speed?

• Speed is always greater than velocity

• Velocity includes direction, speed does not

• Speed includes direction, velocity does not

• Velocity is always greater than speed

If a car travels 60 miles north in 2 hours, what is its velocity?

• 60 miles per hour

• 60 miles per hour north

• 30 miles per hour north

• 30 miles per hour

What happens to the total velocity when two velocities in the same direction are added?

• It decreases

• It becomes zero

• It remains the same

• It increases

In the example of Blinky the fish, what is the total velocity if the river flows at 3 m/s and Blinky swims at 2 m/s in the same direction?

• 2 m/s

• 3 m/s

• 5 m/s

• 1 m/s

What is the formula for calculating acceleration?

• Initial velocity minus final velocity divided by time

• Final velocity minus initial velocity divided by time

• Distance divided by time

• Speed divided by distance

If a car's velocity changes from 10 m/s to 20 m/s in 5 seconds, what is its acceleration?

• 5 m/s²

• 2 m/s²

• 4 m/s²

• 3 m/s²

Tags

NGSS.MS-PS2-2

What does a negative acceleration indicate?

• The object is speeding up

• The object is at rest

• The object is slowing down

• The object is moving in a circle

If a car accelerates from 5 m/s to 20 m/s in 5 seconds, what is its acceleration?

• 4 m/s²

• 3 m/s²

• 5 m/s²

• 2 m/s²