0
Still curious? Ask our experts.
Chat with our AI personalities
Ezra
Maxine
BeauAdd your answer:
Earn +20 pts
What impact does the vertical shift have on the range of a function?
None.
If a ball rolls off the edge of a table two meters above the floor and with an initial velocity of 20 meters per second what is the ball's acceleration and velocity just before it hits the ground?
The horizontal velocity has no bearing on the time it takes for the ball to fall to the floor and, ignoring the effects of air resistance, will not change throughout the ball's fall, so you know Vx. The vertical velocity right before impact is easily calculated using the standard formula: d - d0 = V0t + [1/2]at2. For this problem, let's assume the floor represents zero height, so the initial height, d0, is 2. Further, substitute -g for a and assume an initial vertical velocity of zero, which changes our equation to 0 - 2 = 0t - [1/2]gt2. Now, solve for t. That gives you the time it takes for the ball to hit the floor. If you divide the distance traveled by that time, you know the average vertical velocity of the ball. Double that, and you have the final vertical velocity! (Do you know why?) Now do the vector addition of the vertical velocity and the horizontal velocity. Remember, the vertical velocity is negative!
If two cars drive off a cliff road in a completely horizontal direction Car A driving 80 meters per second and Car B at 20 meters per second which hits the ground first?
They hit the ground at the same time. Both are accelerated downward by gravity at the same rate (9.8m/sec2), so given a level ground surface below, they will complete the vertical fall in virtually the same amount of time. There are slight variables such as air resistance, because the faster car will travel farther out horizontally from the cliff edge and be moving faster at impact.
Is a positive impact bigger or smaller than a negative impact?
depends on the impact
Is consequence and impact same?
When you say consequences they are all positive. When you say impact, they may be positive or negative, such as positive impact or negative impact. But we don't use phrases like positive consequence or negative consequence. But there are surely positive and negative impacts! What do you say?
