The speed of a car travelling on a straight road is listed below at successive intervals of 1 s: Time (s) 0 12 3 4 Speed (m/s) 0 2 4 6 8 Which of the following is/are correct ? The car travels 1. with a uniform acceleration of 2 m/s^ 2. 16 m in 4 s. 3. wi

examrobotsa's picture

Submitted by examrobotsa on

Q: 4 (NDA-I/2017)
The speed of a car travelling on a straight road is listed below at successive intervals of 1 s: Time (s) 0 12 3 4 Speed (m/s) 0 2 4 6 8
Which of the following is/are correct ? The car travels
1. with a uniform acceleration of 2 m/s^
2. 16 m in 4 s.
3. with an average speed of 4 m/s.
Select the correct answer using the code given below:

question_subject: 

Science

question_exam: 

NDA-I

stats: 

0,4,4,4,1,1,2

keywords: 

{'average speed': [0, 2, 4, 2], 'uniform acceleration': [0, 0, 0, 5], 'successive intervals': [0, 0, 0, 1], 'straight road': [0, 0, 1, 2], 'speed': [0, 1, 2, 0], 'car': [0, 2, 12, 17]}

The correct answer is option 1 - 1, 2, and 3.

Let`s analyze each statement:

1. The car travels with a uniform acceleration of 2 m/s^2: Looking at the speed values, we can see that the car`s speed increases by 2 m/s at every interval of 1 second. This indicates a uniform acceleration of 2 m/s^2.

2. The car travels 16 m in 4 s: By adding up the speed values at the given time intervals, we can calculate the distance traveled by the car. In this case, the sum of the speed values from 0 seconds to 4 seconds is 2 + 4 + 6 + 8 = 20 m/s. Therefore, the car travels a distance of 20 m in 4 seconds.

3. The car travels with an average speed of 4 m/s: The average speed of an object can be calculated by dividing the total distance traveled by the total time taken. In this case, the total distance traveled is 20 m and the total time taken is 4 seconds. Dividing 20 m by 4 s gives us an average speed of 5 m/s.

Therefore, all three statements are correct and the