Recent content by iamjohnny56

Homework Statement An object moves along a circular path with a constant speed, |v|. The average acceleration in going from A to B is 1. south 2. zero 3. west 4. north 5. east 6. none of the others Homework Equations a = Δv / Δt tangential acceleration = mv^2 / r...

Homework Statement A 72.8 kg ice skater is moving at 5.01 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.765 m around the pole. The acceleration of gravity is 9.8 m/s2 . Find the force exerted by the rope on...

So if (Smaller) = (Larger) Fd = Fd F(2x) = F(x) Wouldn't the F cancel out? I'm a bit confused about what you said - could you perhaps elaborate a little bit more?

Homework Statement A 24 kg block with a pulley attached slides along a frictionless surface. It is connected by a massless string to a 6 kg block via the arrangement shown. The acceleration of gravity is 9.81 m/s2 . The first part wanted you to find the horizontal distance traveled by the...

Homework Statement A man drops a stone into a water well on his farm. He hears the sound of the splash 3.18 s later. How deep is the well? The acceleration due to gravity is 9.8 m/s^2 and the speed of sound in air is 316 m/s. Answer in units of m. Homework Equations x - x0 = v0t + (1/2)at2...

Homework Statement Consider the plot below describing the acceleration of a particle along a straight line with an initial position of −15 m and an initial velocity of −3 m/s. A. What is the velocity at 5 s? Answer in units of m/s. B. What is the position at 5 s? Answer in units of...

Ok, thank you guys! It does make more sense to think of it as Δv/Δt, so thank you!

Homework Statement A car traveling in a straight line has a velocity of 5.51 m/s at some instant. After 7.36 s, its velocity is 8.09 m/s. What is its average acceleration in this time interval? Answer in units of m/s^2. Homework Equations avg. acceleration = (v2 - v1) / (t2 - t1)...

Thanks, lewando. I realized that I forgot the "+9" after the E when entering the problem in uTexas...although that's never been an issue before, I guess uTexas now requires that for exponents.

Homework Statement Assume that an oil slick consists of a single layer of molecules and that each molecule occupies a cube 0.792 nm on a side. Determine the area of an oil slick formed by 1.56 m^3 of oil. Answer in units of m^2. Homework Equations 1 nanometer = 1.0E9 meters The...