Kinematics

An object can be moving for 10 seconds and still have zero displacement.

• True
• False

You run from your house to a friend's house that is 3 km away. You then walk home. The distance you traveled is 6 km. What is your displacement? 

• 6  km
• 0 km

Speed is a __________ quantity and velocity is a __________ quantity.

• scalar, vector
• vector, scalar

A hummingbird averages a speed of about 45 km/hour (Cool facts: They visit up to 1000 flowers per day, and reach maximum speed, while diving, up to 160 km/hour!). Ruby-throated hummingbirds take a non-stop trip across Gulf of Mexico in which they fly for 18 hours straight! How far is the trip across the Gulf of Mexico at their average speed?

• 810 km
• 2.5 km
• 3.6 km
• 360 km

An object is NOT accelerating if it is moving

• in a circle
• at constant velocity 
• at increasing speed
• only as influenced by gravity

Tags

NGSS.HS-PS2-1

A car slows down from +32 m/s to +8 m/s in 4 s. The acceleration is 

• 6 m/s/s opposite the motion
• 2m/s/s in the direction of motion
• 8 m/s/s opposite the motion

A cheetah travels 75 m in 3 s. What is her velocity over the interval?

• 225 m/s
• 25 m/s 
• 0.04 m/s

What is the average velocity of the object between 0 and 10 seconds?

• 6.0 m/s

• 1.5 m/s

• -4 m/s

• 0 m/s

What is the average velocity of the object between 10 and 15 seconds?

• 6 m/s

• 1.5 m/s

• -4 m/s

• 0 m/s

What is the rate of acceleration of the object between 0 and 4 seconds?

• 1 m/s

• 0 m/s²

• -1 m/s²

• 1 m/s²

Tags

NGSS.HS-PS2-1