Physics equations/02-One dimensional kinematics/Q:definitions

1. A car traveling at 35.3 miles/hour stops in 4.3 seconds. What is the average acceleration?

a) 2.06 x 100 m/s2
b) 3.67 x 100 m/s2
c) 6.53 x 100 m/s2
d) 1.16 x 101 m/s2
e) 2.06 x 101 m/s2

2. A car completes a complete circle of radius 3.1 miles at a speed of 51 miles per hour. How many minutes does it take?

a) 7.25 x 100 minutes
b) 9.66 x 100 minutes
c) 1.29 x 101 minutes
d) 1.72 x 101 minutes
e) 2.29 x 101 minutes

3. A car traveling at 21.3 mph increases its speed to 24.2 mph in 1.4seconds. What is the average acceleration?

a) 9.26 x 10-1 m/s2
b) 1.65 x 100 m/s2
c) 2.93 x 100 m/s2
d) 5.21 x 100 m/s2
e) 9.26 x 100 m/s2

4. Mr. Smith is backing his car at a speed of 3.28 mph when he hits a cornfield (seed corn). In the course of 1.92 seconds he stops, puts his car in forward drive, and exits the field at a speed of 5.66 mph. What was the magnitude ( absolute value) of his acceleration?

a) 2.94 x 100 miles per hour per second
b) 3.7 x 100 miles per hour per second
c) 4.66 x 100 miles per hour per second
d) 5.86 x 100 miles per hour per second
e) 7.38 x 100 miles per hour per second

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