How long is tina, a ballerina, in the air when she leaps straight up with a speed of 1.8 m/s?

0.367 s

Explanation:

Tina has a unifomrly accelerated motion along the vertical direction, with initial velocity and constant acceleration downward (acceleration due to gravity). Its position at time t is given by the equation:

where is the initial height, so we can remove it from the equation:

We need to find how long is Tina in the air, which means we have to find the time t at which Tina reaches the ground again, so the time t at which :

which has two solutions:

--> time at which Tina starts its motion, so we don't consider this one

the expression 15n + 2(3p) represents the amount isaiah spent buying gasoline and snacks, where n represents the price of each gallon of gasoline and p represents the cost of each snack that he bought. which statement is true about the amount isaiah spent?

jupiter

explanation:

it is so massive and has such a strong gravitational pull its likely prevented the formation of a planet between itself and mars in the asteroid belt

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