Chapter 4 Review

Mr. Christenson shaves his hair at a speed of 0.15m/s. He speeds up because he is late for work. After 3 seconds, he reaches a speed of 0.25m/s. What is Mr. Christenson's acceleration?

• 0.03 m/s2

• 0.13m/s2

• 0.056 m/s2

• 0.083 m/s2

Which of the following is a unit for acceleration?

• km/s
• m/s²
• mi/hr
• ft

Can be measured in meters per second (m/s)

• Distance
• Time
• Speed
• Acceleration

What is velocity?

• the quickness of an object
• the location of an object
• acceleration
• speed in a specific direction

Calculate the speed (in meter/sec) of a cheetah that runs 180 meters in 10 seconds.

• 198 m/sec

• 170 m/sec

• 12 m/sec

• 18 m/sec

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

65 miles per hour North is an example of an objects what?

• Speed
  
• Velocity
• Average Speed
• Constant Speed

Naomi has a car, she drives to Chickfila at 70km/hr West for 0.45 hrs. She gets her food and heads to the high school at 50k/hr North for 0.12 hrs. What position is the high school?

• (-31.5 km,+6.0km)

• (-155.6km, +416.7km)

• (-31.5,+6.0)

• (+31.5km,-6.0km)

20 km/hr is an example of

• direction

• velocity

• speed

• distance

Which unit would be used for time?

• hours

• km

• miles

• km/hr