Answer:
a.neither of them is correct
b. Zach's statement is not correct, since do not know where the objects started and can't be sure if they pass each other.
c. Victoria's statement is not correct as the objects have the opposite accelerations, however free-falling objects should have the same downward acceleration
Explanation:
Fiqure 1) shows the velocity-versus-time graphs for two objects A and B the motion of the ohiecds Zach savs The aranh could represent two cars Zach traveling in opposite directions that pass each other." Victoria says, "No, I think they could be R cally from a bridge, rock A is thrown upward Victoria downward
ans :neither of them is correct
Previous Answers Submit VCorrect Figure 1 of 1
Part B V,
Why is Zach's statement wrong? Check all that apply
. A Zach's statement is not correct, since the objects move in the same direction for some time interval.
Ans: Zach's statement is not correct, since do not know where the objects started and can't be sure if they pass each other.
Previous Answers Request Answer Submit x Incorrect;
Try Again
Part C
Why is Victoria's statement wrong? Check all that apply Victoria's statement is not correct as the objects both should have been thrown either upward or downward
Answer:. Victoria's statement is not correct as the objects have the opposite accelerations, however free-falling objects should have the same downward acceleration gGraph
My explanation further from the graph will be that there are opposite bodies, one is accelerating with time , why the other is decelerating with time.
Answer:
-78.4 cm
Explanation:
We can solve the problem by using the lens equation:
where
p is the distance of the object from the lens
q is the distance of the image from the lens
f is the focal length
Here we have
p = 80.0 cm
q = -39.6 cm (negative, because the image is on the same side as the object , so it is a virtual image)
Substituting, we find f:
Acceleration is a change in speed and/or direction
Explanation:
The acceleration of an object is defined as the rate of change of velocity, mathematically:
where
is the change in velocity
is the time taken for the velocity of the object to change
We notice that velocity is a vector quantity, so it consists of:
- A magnitude, which is called speed
- A direction
Since acceleration is the rate of change in velocity, this means that the acceleration is non-zero whenever is non-zero, which means that either the speed AND/OR the direction of the velocity is changing.
For instance:
- For an object which is speeding up along a straight line, the speed is changing but the direction is not --> still, the object is accelerating
- For an object moving in a uniform circular motion, the speed is constant while the direction is changing --> still, the object is accelerating
So the correct answer is
a change in speed and/or direction
Learn more about acceleration:
#LearnwithBrainly