Initial velocity of rolling ball

Thread starter Siraaj
Start date Jan 25, 2007
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Ball Initial Initial velocity Rolling Rolling ball Velocity

In summary, the initial velocity of a rolling ball is the speed and direction at which it starts moving from a stationary position, and can be affected by factors such as initial height, surface, and external forces. It can be measured using a stopwatch and is important in understanding the motion of objects and how forces impact their movement in various scientific fields.

Jan 25, 2007

Siraaj

A rolling ball has an initial velocity of -1.5 m/s .

a. if the ball has constant acceleration of -0.23 m/s^2, what is its velocity after 2.2 s?

V = vo + at = -1.5
-0.23 * 2.2 = -1.5 - 0.506 = -2.006 = -2.0 m/s
answer is -2.0 m/s

b. what was its average velocity during that time interval?
Vav = ( -2.0 - 1.5)/2 = -1.75 m/s
answer is -1.75 m/s

c. How far did it travel in this time interval?
D = VoxT + at^(2/2) = -1.5 * 2.2 - (0.23 * 2.2^2)/2 = -3.3 - 0.56 = -3.86
answer is -3.86

What is the definition of initial velocity of a rolling ball?

The initial velocity of a rolling ball is the speed and direction at which the ball begins to move before any external forces act upon it.

How is initial velocity of a rolling ball different from initial velocity of a thrown ball?

The initial velocity of a rolling ball is the speed and direction at which it starts moving from a stationary position, while the initial velocity of a thrown ball is the speed and direction at which it begins moving after being thrown.

What factors affect the initial velocity of a rolling ball?

The initial velocity of a rolling ball can be affected by the initial height of the ball, the surface it is rolling on, and any external forces acting upon it such as friction or gravity.

How can the initial velocity of a rolling ball be measured?

The initial velocity of a rolling ball can be measured using a stopwatch to time the ball's movement over a known distance. The velocity can then be calculated using the formula v=d/t, where v is velocity, d is distance, and t is time.

Why is understanding the initial velocity of a rolling ball important in science?

Understanding the initial velocity of a rolling ball is important in science because it helps us to understand the motion of objects and how different forces can affect their movement. This knowledge can be applied in various fields such as physics, engineering, and sports science.