Speed Velocity & Acceleration

A car initially traveling at 8.0 meters per second doubles its speed while traveling in a northeast direction.

Students used a table to record the initial and final conditions for speed and velocity.

Which table is correct?

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• 
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Tags

112.20.b.6.B

Which statement best describes the motion of the toy vehicle during the first 30 seconds of the investigation?

• The vehicle was traveling at a constant speed

• The vehicle was accelerating at a constant rate

• The speed of the vehicle was increasing

• The acceleration of the vehicle was increasing

Tags

112.20.b.6.B

A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Because the meteor was only 45 m wide and was 27,700 km above Earth's surface, it was not visible without the aid of a telescope.

Which statement describes the meteor's motion?

• Its velocity was 7.8 km/s northward

• Its acceleration was 468 km/s²

• Its speed was 468 km/s northward

• Its acceleration was 7.8 km/s²

Tags

112.20.b.6.B

Which statement best describes the cart?

• The cart was stationary with a velocity of 0 m/s for the entire 7 seconds

• The cart was stationary except for a short burst of acceleration of 0.5 m/s²

• The cart moved at a constant velocity of 0.5 m/s for the entire 7 seconds

• The cart accelerated at a constant rate of approximately 0.8 m/s²

Tags

112.20.b.6.B

Match the following

• 30 m/s east

• Speed

• 30 m/s

• Acceleration

• 30 m/s²

• Velocity

Tags

112.20.b.6.B

Which of the following best describes the velocity of an object?

30 ​ (a)  

• m/s east
• m/s
• m east
• m/s2

Tags

112.20.b.6.B

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

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

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

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

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

Tags

112.20.b.6.B

The pickup truck has a changing velocity because the pickup truck -

• can accelerate faster than the other two vehicles

• is traveling in the opposite direction from the other two vehicles

• is traveling on a curve in the road

• needs a large amount of force to move

Tags

112.20.b.6.B