Unit, speed and acceleration

Polar bears are extremely good swimmers. If a polar bear is swimming with an average of 2.6 m/s, how far will it have traveled after 120 seconds?

• a. 46.2 m

• b. 120 m

• c. 312 m

• d. 456.3 m

2. Tree sloths are the slowest moving mammals. On average, their velocity is 0.743 m/s. How long does it take a tree sloth moving at this velocity to travel 22.3 m?

• a. 16.6 s

• b. 30.0 s

• c. 0.03 s

• d. 143.7 s

It is the rate of change of the object's position with respect to a frame of reference and time.

• a. Velocity

• b. Speed

• c. Time

• d. Acceleration

What is the correct formula for acceleration?

• a. a= vF - Vo

  t

• b d = s x t

• c. a = d x t

• d. a =

3. What is the speed of a car that traveled 0.2 km in 12 seconds?

• a. 64 m/s

• b. 16.66m/s

• c. 166.67m/s

• d. 1.66m/s

If it takes Heather 3 seconds to run from the batter's box to first base at an average speed of 6.5 meters per second, what is the distance she covers in that time?

• a. 19.5 m

• b. 0.46 m

• c. 2.2 m

• d. 3.5 m

Bart ran 5,000 meters from the police at an average speed of 21.6 km/hr before he got caught. How fast did he run?

• a. 30,000 s

• b. 0.0012 s

• c. 833.3 s

• d. 4.32s

If Mike rides his motorcycle at an average speed of 20 m/s for 500 seconds, how far does he ride?

• a. 10,000 m

• b. 25 m

• c. 0.04 m

• d. 250 m

It is the rate at which velocity changes with time, in terms of both speed and direction.

• a. velocity

• b. speed

• c. time

• d. acceleration

It is defined as a vector measurement of the rate and direction of motion.

• a. velocity

• b. acceleration

• c. time

• d. speed