Principles of Technology Fall Finals

1. Vectors are quantities represented  by

• magnitude and direction

• magnitude only

This is the path followed by a projectile.

• projection angle

• range

• trajectory

This means velocity is changing.

• speed

• distance

• acceleration

• vector

What is the unit of force?

• kilograms

• meters

• meters per second

• newtons

What is the sum of 400 m east  and 100 m west?

• 500 m east

• 300m east

• 300 m west

• 500 m west

What is the formula for speed?

• mass x acceleration

• distance x time

• distance divided by time

 Suppose a car  travels a distance of 300 miles in 5 hours. What is the average speed of the car?

• 1500 mph

• 60 mph

• 0.0167 mph

A man walking down the street has

• kinetic energy

• nuclear energy

• potential neergy

The roller coaster carts with the riders have 

• kinetic energy

• potential energy

• both potential and kinetic energy

What is the  potential energy of a 1 kg book on top of a table 1.5 m high?

PE = mgh,  g=9.8 m/s²

• 29.4 J

• 0 J

• 15.2 J

• 14.7 J