One-Dimensional Motion

 

 

1)         You slow your car from 75 km/hr to 45 km/hr over a displacement of 88 m. Find your acceleration, in m/s2.

 

 

 

 

 

 

2)         What was the time, in seconds, needed for you to slow down in Question 1?

 

 

 

 

 

 

 

3)         Using the acceleration from Question 1, what distance would be needed to bring your car to a stop?

 

 

 

 

 

 

 

 

3)         At which times does the object reverse direction?

 

4)         What was the displacement between 0.0 sec and 5.0 sec?

 

5)         What was the distance traveled between 0.0 sec and 5.0 sec?

 

6)         What was the instantaneous velocity at 9.0 sec?

 

7)         What is the average velocity shown by the graph?

 

8)         A baseball pitcher throws a ball. The ball accelerates from 0.0 m/s to 44 m/s over a displacement of 3.5 m. Calculate the acceleration of the ball. Also, one g (the acceleration due to gravity) is 9.8 m/s2. How many g’s did the baseball experience?

 

       

 

9)         A bowler rolls a bowling ball, and he hears it hit the pins 2.50 s after releasing it. The ball rolled down the alley, and the sound wave traveled back. Assuming it was rolling at a constant speed, how fast was the ball moving? The length of a bowling alley is 19.2 m, and the speed of sound is 340 m/s.

 

 

 

 

 

 

 

 

 

 

10)       A friend of yours is running to catch a bus. She’s running at a constant speed of 4.5 m/s. When she is 6.0 m from the bus, it begins to drive off with a constant acceleration of 0.95 m/s2. How much time will it take her to catch the bus?

 

 

 

 

 

 

 

 

 

 

 

 

 

11)       You’re in a tall building. You lean out of a window, 75 m above the ground, and throw a rock into the air. If you throw the rock straight upwards, with an initial speed of 15 m/s, how much time will pass before the rock hits the ground?