Help me Plz!!! This is about projectile motion.?

Question

Help Pls!!! About Projectile Motion.?
1.) How the horizontal component of velocity of a projectile does vary with time?

2.) How the vertical component of velocity of a projectile does vary with time?

3.) How does the initial velocity of a ball from the edge of the table change with the point of release on the invlined plane?

Plz!!! Help!!

Answer 1

1.
Horizontal componets doesn't vary with time provided that air resistance is neglected.

2.
v = u + gt , where u is the initial vertical velocity (downwards) and g is the gravitational acceleration

3.
Question is not very clear to me!!

Answer 2

you've got good answers for (1) and (2). For question 3, i believe u are referring to a ball rolling down an inclined plane?

If this is so, then the initial velocity of the ball is zero.
It gains velocity as it moves down due to gravity.
The force it experiences down the slope is WSinA (where W is the weight of the ball and A is the angle of slope). Assuming there is no friction at play, the ball should accelerate and simply get faster and faster.

Answer 3

1. Neglecting dissipative forces such as air resistance, it remains constant.

2. Again, neglecting dissipative forces, it will increase at the rate of acceleration due to gravity: v = vi + at.

3. The horizontal component will remain constant and the vertical component will increase as above. Knowing the angle of inclination you can determine the velocity in the direction of motion at a given time.

Answer 4

1) Horizontal velocity is constant, because there is no force opposing it.

2) Vertical velocity declines at -9.8 m/s^2 (acceleration due to gravity)

3) Um, I don't really understand the question.

Answer 5

1) if you ignore air resistance, horizontal velocity does not change

2) The vertical component accelerates towards the ground at 9.8m/s^2 (assuming you're on earth)

3)What?

Answer 6

If the piece separates gently (and now not with an explosion as in case of a fire cracker rocket ) then it will fly ingredient by ability of way of ingredient as no exteriorchronic has acted on the stone or the piece. So the perfect respond is decision a million. In case of an explosion halfway it will count on the ingredient of separation. The small piece can pass in any random course (now not consistently horizontal) and adjust to unique parabolic direction.

Answer 7

as horizontal comp. of velocity is ucos @ its independent of time and so it doesnt change
also the same answer but instead it wud be usin@

answer to 3 is a mathematical expression.which i cant write so let me know if u same other doubts.
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