S2 Force, Velocity, Acceleration, Vector Review

What is magnitude?

• The direction that describes a quantity.
• A numerical value
• A unit of force

A quantity that has both magnitude and direction is called a scalar quantity.

• True
• False

Wind blowing at 20 mph. Vector or scalar?

• Scalar

• Vector

The president’s airplane, Air Force One, flies at 250 m/s to the east with respect to the air. The air is moving at 35 m/s to the north with respect to the ground. Find the velocity of Air Force One with respect to the ground. (Think: would velocity be magnitude or direction angle?)

• 252 m/s

• 222 m/s

• 435 m/s

• 125 m/s

Tags

NGSS.HS-PS2-1

A girl is pedaling her bicycle at a speed of 0.10 km/min.  How far will she travel in two hours? (pay attention to units) 

• 20 km 
• .2 km
• 3 km 
• 12 km 

Bill runs 400 meters to Andy's house, turns around, and runs 400 meters back home.  What is Bill's displacement?

• 0 meters
• 400 meters
• 800 meters
• 1600 meters

What is the speed this motion?

• constant speed
• not moving
• speed increasing
• speed increasing at a constant rate

Tags

NGSS.MS-PS3-1

What is the total distance traveled by a car that is traveling at 20 m/s for 3 minutes?

• 4000 m
• 3600 m
• 60 m
• depends on the mass of the car

Acceleration: is the rate of change in ___________.

• speed

• distance

• velocity

Billy was driving his car and when he reached the tollbooth he slowed from 190m/s to 12m/s in 20 second.

• -8.9m/s²

• 8.9m/s²

• 9.8m/s²