- #1
carolyn89012
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Homework Statement
A ball is hit by a golfer. The angle is 28 degrees, the velocity of the projectile is 16.0, the distance is 16.8m on horizontal. What is the velocity before impact on the ground of the ball?
2. Homework Equations
3. The Attempt at a Solution
carolyn89012 said:Ok, so we have:
x=V_ox*t + 1/2 a_x t^2
16.8=14.18* t + 1/2 (0) t^2
16.8/14.18=t
t=1.14
However, a need the answer for y to continue, is that correct?
I, then, solved for V_x and V_y and then combined the two in solving for V_f using the the square root of the addition of (V_x)2 + (V_y)2. But don't know if any of this is correct.
Kinetic energy in 2 dimensions is the energy an object possesses due to its motion in two perpendicular directions, typically represented by the x and y axes. It is calculated as 1/2 * mass * (velocity in x direction)^2 + (velocity in y direction)^2.
In 2 dimensions, kinetic energy is directly proportional to the square of an object's velocity in each direction. This means that as the velocity increases, the kinetic energy increases at a much faster rate.
The formula for calculating momentum in 2 dimensions is mass * (velocity in x direction) + mass * (velocity in y direction). This takes into account the direction of the object's motion and the amount of mass it has.
When an object changes direction in 2 dimensions, its kinetic energy does not change. This is because kinetic energy is dependent on an object's speed, not its direction. However, the object's momentum will change as it changes direction.
Yes, an object can have kinetic energy in only one dimension. This means that the object is only moving in one direction, such as on a straight line, and has no motion in the perpendicular direction. In this case, the formula for kinetic energy would only include the velocity in that one direction.