Physics
posted by Jennifer .
A ball is thrown from ground level up in the air at 61m/s. How fast is the ball going 1s after being thrown.
This problem wants you to use the formula
v = (1/2)gt^2 + v_0
g=9.8m/s^2 and v_0 = 61m/s so
v = (1/2)g*(1s)^2 + 61m/s at t = 1.
I wrote the formula wrong. It should be
v = gt + v_0
I mixed the velocity formula and the distance formula.
You need the formula: velocity (finall) = velocity (initial) + at.
Here, the velocity initial is 61, and the t (time) is 1s. Remember, since the ball is decelerating (the acceleration is in the oppostie direction to which the ball is thrown), the a is 9.8m/s^2. Just plug 'em in!
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