Recent content by Sylis

Thank you. I started to second guess myself there at the last part. Appreciate the reassurance.

Homework Statement Consider the two examples that follow: Example A. The figure below shows a truck coasting at a speed of 30mph just before it hits a large, impenetrable b ridge abutment. The truck's engine is off. The truck is brought very quickly to a complete stop in a time...

I got it, 65.585- (2pi x 10) = 2.9 rad. Thank you. I'm having a real tough time with these problems.

Homework Statement A turntable rotates counterclockwise at 78rpm, a speck of dust on the turntable is at 0.42rad at t=0 ,What is the angle of the speck at t = 8.0s ? Your answer should be between 0 and 2π rad Express your answer using two significant figures.Homework Equations θf-θi=ωt The...

1. Homework Statement A 1500 kg car drives around a flat 200-m-diameter circular track at 25 m/s. What is the magnitude and direction of the net force on the car? What causes this force? 2. Homework Equations F=mv2/r 3. The Attempt at a Solution So I suppose the net force is...

So basically... "normal force is any force that opposes the force on an object by another object in the opposite direction regardless of being horizontal or vertical" in layman terms? Even then, how do you have a normal force in a horizontal plane when there is no object pressing against it in...

Yea, I knew there wasn't just the one horizontal force, that's just what I had come up with so far. I thought that Fn was normal force, which only applied to horizontal surfaces. So normal force is any force that opposes the force on an object by another object in the opposite direction...

A 1.0 kg wood block is pressed against a vertical wood wall by a 12 N force (into the wall, at a 30 degrees angle up from the horizontal). if the block is initially at rest, will it move upward, move downward, or stay at rest? I'm working on the problem above, and through Google found this...

The force of the hammer is enough to drive the nail into the wood to some degree but at some point the hammer would be driven back. (Unless you have the accuracy and confidence to hit the nail home in one swing.) Is this what you're getting at?

I guess the "Equal and opposite reaction" part. That means to me that the wall would exert the same amount of force back onto the wrecking ball. I read somewhere in my search for knowledge that there is better way of wording Newton's Third law, but they couldn't remember what it was.

"For every action there is an equal and opposite reaction." I'm having a difficult time wrapping my head around this. I'm having a hard time applying it to certain situations. For example, a hammer hitting a nail, but more presently a problem in my homework. A building is being torn down...

Homework Statement A rifle is aimed horizontally at a target 50m away. The bullet hits the target 2.5cm below the aim point. A) Find the bullets flight time. B)Find the bullets initial velocity upon leaving the barrel. Homework Equations Projectile kinematic equations/ The Attempt at a...

I just have a general question. When is it okay to assume that Initial Velocity is 0 m/s? For instance I have this question: A football is kicked straight up into the air; it hits the ground 3.8s later. Do I assume that the initial Velocity is 0 m/s? Or do I assume that I'm only...

We're supposed to show equal time spacing. Each dot would represent one second. The velocity vectors would increase in size as the object falls to Earth do to acceleration. The arrows connecting each dot are the velocity vectors. I just don't understand what it means to label them. They're...

No... no it isn't. Thank you for pointing that out. Still though, what does it mean it wants me to label the velocity vectors?