1. If Mike drove for nine hours at a speed of 105km/h, how far did he drive in meters (m)?

2. Ann jogged 5.5 miles south to her house in 0.9 hours. What is Ann's speed? What is Ann's velocity?

3. How long will it take a car to accelerate from 18.9 m/s to33.7 m/s if the car has an acceleration of 4.2m/s2?

1) 945000 m

2) 6.11 miles/hour

3) 3.52 seconds

Explanation:

1. Speed is the time rate of change of distance, it is the ratio of distance to time. Speed is given by the equation:

Given that:

Time (t) = 9 hours and Speed (S) = 105 km/h

2) Time (t) = 0.9 hours and distance (d) = 5.5 miles

3) Acceleration it is the ratio of velocity to time. Acceleration is given by the equation:

Given that :

a = 4.2 m/s² , u = 18.9 m/s and v = 33.7 m/s

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