Quiz 4:

1. A uniformly accelerated motion is a motion where...

• A. the acceleration is a constant
• B. the acceleration changes at a uniform rate with distance
• C. the acceleration changes at a uniform rate with time
• D. the velocity is a constant
• E. the acceleration is zero

2. A particle changed its speed from 4 m ⁄ s to 22 m ⁄ s with a uniform acceleration of 15.67 m ⁄ s ². Calculate the time taken.

• A. 0.484 s
• B. 1.318 s
• C. 1.149 s
• D. 0.652 s
• E. 1.556 s

3. A particle, starting from a speed of 2.0 m ⁄ s, was accelerated with a uniform acceleration for 3.56 seconds. If it was displaced by 50 m during this time interval, calculate its acceleration.

• A. 1.893 m ⁄ s ²
• B. 6.767 m ⁄ s ²
• C. 4.579 m ⁄ s ²
• D. 0.778 m ⁄ s ²
• E. 2.921 m ⁄ s ²

4. A particle, initially moving with a speed of 84 m ⁄ s, was accelerated through a distance of 48 m with a uniform acceleration of 41.3 m ⁄ s ². Calculate its speed at the end of the trip.

• A. 121.287 m ⁄ s
• B. 24.922 m ⁄ s
• C. 104.98 m ⁄ s
• D. 62.766 m ⁄ s
• E. 182.503 m ⁄ s

5. A particle was uniformly accelerated from a speed of 28.54 m ⁄ s to a speed of 42.8 m ⁄ s in 5.74 seconds. How far did it travel?

• A. 377.738 m
• B. 303.803 m
• C. 204.746 m
• D. 86.321 m
• E. 255.572 m

6. The speed of a particle changed from 30 m ⁄ s to 55 m ⁄ s in 10.333 seconds with a uniform acceleration. Calculate the acceleration and the distance travelled respectively.

• A. 2.419 m ⁄ s ², 439.153 m
• B. 3.516 m ⁄ s ², 439.153 m
• C. 2.419 m ⁄ s ², 387.912 m
• D. 3.516 m ⁄ s ², 387.912 m
• E. 3.516 m ⁄ s ², 312.704 m

7. A particle, starting from a speed of 10 m ⁄ s, accelerated for 6.55 seconds with a uniform acceleration of 9.77 m ⁄ s ². The distance travelled and its final speed respectively are

• A. 275.079 m and 73.994 m ⁄ s
• B. 275.079 m and 37.76 m ⁄ s
• C. 178.068 m and 37.76 m ⁄ s
• D. 178.068 m and 73.994 m ⁄ s
• E. 369.637 m and 73.994 m ⁄ s

8. The speed of a uniformly ccelerated particle changed from 100.23 m ⁄ s to 110.33 m ⁄ s in a distance of 650 m. Its acceleration and the time taken respectively are

• A. 0.99 m ⁄ s ² and 6.174 s
• B. 1.636 m ⁄ s ² and 2.081 s
• C. 0.99 m ⁄ s ² and 2.081 s
• D. 2.913 m ⁄ s ² and 1.336 s
• E. 1.636 m ⁄ s ² and 6.174 s

9. An object released from a certain height took 4.435 seconds to heat the ground. The height and its velocity just before it hits respectively are...

• A. 138.194 m and -67.084 m ⁄ s
• B. 96.379 m and -67.084 m ⁄ s
• C. 138.194 m and -43.463 m ⁄ s
• D. 76.334 m and -11.421 m ⁄ s
• E. 96.379 m and -43.463 m ⁄ s

10. An object thrown upwards reaches a maximum height of 25.7 m. The speed with which it was thrown and the time take to reach the maximum height respectively are...

• A. 22.444 m ⁄ s and 0.461 s
• B. 22.444 m ⁄ s and 2.29 s
• C. 25.878 m ⁄ s and 0.461 s
• D. 14.059 m ⁄ s and 2.29 s
• E. 14.059 m ⁄ s and 0.461 s

11. An object is thrown upwards from a 40.9 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...

• A. -43.481 m ⁄ s and 2.832 s
• B. -77.622 m ⁄ s and 7.804 s
• C. -66.216 m ⁄ s and 7.804 s
• D. -43.481 m ⁄ s and 7.804 s
• E. -66.216 m ⁄ s and 2.832 s