Unit of Measurement/Centripetal Motion/Momentum Review

What is the unit of measurement for velocity?

• meters/sec

• seconds

• newtons

• watts

What is the unit of measurement for acceleration?

• meter/sec

• inches/sec^2

• meter/sec^2

• kilograms

What is the unit of measurement for force?

• kilograms

• Newtons

• The Jedi

• time

What is the unit of measurement for speed?

• kilograms

• meter/sec

• seconds

• meter/sec^2

What does a distance vs. time graph represent?

Hint: think about the units of distance and time

• force

• speed and or velocity

• acceleration

What is the unit of measurement for time?

• seconds

• newtons

• liters

CIRCULAR MOTION/CENTRIPETAL MOTiON:

A washer is on a string which is 1.5 m long. If it completes 1 revolution in 8 seconds, calculate the centripetal velocity.

• 2 m/s

• 0.94 m/s

• 0.88 m/s

• 2.4 m/s

CENTRIPETAL MOTION/CIRCULAR MOTION

A 20 kg object is experiencing a centripetal acceleration of 10 m/s^2. What is the centripetal force?

• 50 N

• 202 N

• 200 N

• 186 N

The momentum of a 5-kg object moving at 6 meters per second is

• 1 kg.m/sec

• 5 kg.m/sec

• 11 kg.m/sec

• 30 kg.m/sec

What is the magnitude of the centripetal acceleration of a 4-kg mass orbiting at 10 m/sec with a radius of 2 meters?

• 5 m/sec^2

• 50 m/sec^2

• 80 m/sec^2

• 200 m/sec^2