Question 2 of 10
2 answers:
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Answer:
Negative acceleration
Explanation:
Let us assume a vehicle is moving with a constant velocity u and then it comes to a sudden stop.
The initial velocity of the vehicle is u and finally it comes to rest, it means final velocity is 0.
As we know that,
Acceleration is equal to change in velocity divided by time taken.
We can see that the value of acceleration is negative. Hence, it leads to negative acceleration.
Answer: The correct answer is option (D).
Explanation:
Vertical distance of first water jet =
Vertical distance of second water jet =
Horizontal velocity of first water jet =
Horizontal velocity of second water jet =
Vertical distance of first water jet:
...(1)
Similarly, Vertical distance of second water jet:
...(2)
Horizontal distance of first water jet:
There is no acceleration in horizontal direction.
...(3)
Horizontal distance of second water jet:
...(4)
On dividing (3) and (4):
(from (1) and (2))
Hence, the correct answer is option (D).