speed, velocity and acceleration

1 types of speed

• speed

• velecity

• velocity

• acceleration

what is a another type of speed

• agility

• addison

• volume

• velocity

There is 5 types of speed?

• False

• True

A police car accelerates quickly to 60 meters per second in order to pursue a minivan that is recklessly speeding along the highway at 45 meters per second. How long will it take the police car to catch up if the minivan is 600 meters ahead of the police car at the beginning of the chase?

• 10 sec

• 15 sec

• 40 sec

• 50 sec

At time t = 1 min the car is traveling at a velocity of 20 meters per second, and at time t = 2 min the car reaches a velocity of 40 meters per second. Which statement best describes the car’s motion during this time interval?

• The car’s average acceleration is 0.33 m/s^2

  2

  squared

  .

• The car’s average speed is the same as the car’s average velocity.

• The car’s average velocity is 30 m/s, assuming a straight path of travel.

• The car’s velocity never drops below 20 m/s and never surpasses 40 m/s.

An object is dropped from the top of the Empire State Building. Which of the following statements best describes the motion of the object as it experiences air resistance during its downward fall?

• The speed will increase at a constant rate for its fall.

• The speed will decrease at a constant rate for its fall.

• Its speed remains constant for the fall.

• Its acceleration will decrease until the object starts moving with a constant speed.