Julia jumps straight upward on mars, where the acceleration due to gravity is 3.7\,\dfrac{\text{m}}{\text{s}^2}3. 7 s 2 m 3, point, 7, space, start fraction, m, divided by, s, start superscript, 2, end superscript, end fraction downward. after 3\,\text{s}3s3, space, s, julia is falling downward with a velocity of 3.1\,\dfrac{\text{m}}{\text{s}}3.1 s m 3, point, 1, space, start fraction, m, divided by, s, end fraction.

We know the equation of motion v = u+ at, where v is the final velocity, u is the initial velocity, a is the acceleration and t is the time taken.

In this case Final velocity = -3.1 m/s, negative sign indicates it is pointing downward.

acceleration = - 3.7m/ . Negative means acceleration is towards center of planet Mars.

Time taken = 3 seconds

So jumping velocity of Julia = 8 m/s

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