Choose the best answer

1. For a uniformly accelerated motion average and
   instantaneous acceleration
   
   1. are always different
      
   2. are reciprocals of of each other
      
   3. are negatives of eachother
      
   4. may be the same or different
      
   5. are always the same
      
   Answer: E
   

2. A particle changed its speed from 20.55 m ⁄ s to 85.11 m ⁄ s in 6.11 seconds
   with a uniform acceleration. Calculate its acceleration.
   
   1. 10.566 m ⁄ s ²
      
   2. 17.44 m ⁄ s ²
      
   3. 14.842 m ⁄ s ²
      
   4. 13.295 m ⁄ s ²
      
   5. 3.774 m ⁄ s ²
      
   Answer: A
   

3. A particle, starting from a certain speed was
   accelerated with a uniform acceleration of 3 m ⁄ s ²
   for 1.93 seconds. If it was displaced by 55 m during
   this time interval, calculate its initial speed.
   
   1. 42.929 m ⁄ s
      
   2. 33.84 m ⁄ s
      
   3. 25.602 m ⁄ s
      
   4. 8.704 m ⁄ s
      
   5. 48.131 m ⁄ s
      
   Answer: C
   

4. The speed of a particle moving with a uniform
   acceleration of 25.33 m ⁄ s ² changed from 26 m ⁄ s to 43 m ⁄ s.
   How far did it travel.
   
   1. 3.716 m
      
   2. 19.452 m
      
   3. 42.533 m
      
   4. 23.154 m
      
   5. 37.68 m
      
   Answer: D
   

5. A particle initially moving with a speed of 16 m ⁄ s was
   accelerated uniformly for 0.733 seconds. Calculate its
   speed after it has travelled a distance of 90 m.
   
   1. 229.566 m ⁄ s
      
   2. 130.347 m ⁄ s
      
   3. 156.246 m ⁄ s
      
   4. 309.729 m ⁄ s
      
   5. 82.766 m ⁄ s
      
   Answer: A
   

6. The speed of a particle changed from 28 m ⁄ s to 52 m ⁄ s in 15.743 seconds
   with a uniform acceleration. Calculate the acceleration
   and the distance travelled respectively.
   
   1. 1.524 m ⁄ s ², 871.665 m
      
   2. 1.268 m ⁄ s ², 275.535 m
      
   3. 1.268 m ⁄ s ², 629.72 m
      
   4. 1.524 m ⁄ s ², 629.72 m
      
   5. 1.268 m ⁄ s ², 871.665 m
      
   Answer: D
   

7. A particle, starting from a speed of 50 m ⁄ s, accelerated for
   18.93 seconds with a uniform acceleration of 3.33 m ⁄ s ². The distance
   travelled and its final speed respectively are
   
   1. 1543.144 m and 113.037 m ⁄ s
      
   2. 187.215 m and 113.037 m ⁄ s
      
   3. 2022.472 m and 135.107 m ⁄ s
      
   4. 1543.144 m and 135.107 m ⁄ s
      
   5. 2022.472 m and 113.037 m ⁄ s
      
   Answer: A
   

8. The speed of a uniformly ccelerated particle changed
   from 100.23 m ⁄ s to 110.33 m ⁄ s in a distance of 1050 m.
   Its acceleration and the time taken respectively are
   
   1. 1.013 m ⁄ s ² and 13.811 s
      
   2. 0.462 m ⁄ s ² and 9.973 s
      
   3. 1.013 m ⁄ s ² and 9.973 s
      
   4. 0.462 m ⁄ s ² and 13.811 s
      
   5. 0.861 m ⁄ s ² and 5.94 s
      
   Answer: C
   

9. An object released from a certain height took 20.685 seconds
   to heat the ground. The height and its velocity just before
   it hits respectively are
   
   1. 2657.662 m and -132.662 m ⁄ s
      
   2. 2096.559 m and -202.713 m ⁄ s
      
   3. 1106.801 m and -202.713 m ⁄ s
      
   4. 2096.559 m and -30.64 m ⁄ s
      
   5. 1106.801 m and -30.64 m ⁄ s
      
   Answer: B
   

10. An object is thrown upwards with a speed of 10.43 m ⁄ s.
    The maximum height reached and the time taken to
    reach the maximum height respectively are
    
    1. 0.94 m and 0.749 s
       
    2. 5.55 m and 1.064 s
       
    3. 0.94 m and 0.574 s
       
    4. 5.55 m and 0.574 s
       
    5. 0.94 m and 1.064 s
       
    Answer: B
    

11. An object is thrown upwards from a 34.7 m building with
    a speed of 33 m ⁄ s. Its velocity just before it hits the
    ground and the time taken to hit the ground respectively are
    
    1. -10.378 m ⁄ s and 9.241 s
       
    2. -42.061 m ⁄ s and 7.659 s
       
    3. -62.639 m ⁄ s and 7.659 s
       
    4. -10.378 m ⁄ s and 7.659 s
       
    5. -42.061 m ⁄ s and 9.241 s
       
    Answer: B