Question

A body is projected horizontally from a height of 78.4m with a velocity 10 m/s. Its velocity after 3 s is

Answer 1

The formula for velocity is u + at.

Here, the velocity after 3 secs will be u + gt.

Then it becomes 10i + 10 (-j) 3.

The final answer will be 10i - 30j metre per second.

Height is mentioned in the question, however it is not required, but may distract the students.

Answer 2

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