Recent content by lauralovesyou

Homework Statement A car accelerates from 14 m/s to 26m/s in 4s. How far did the car travel in the fourth second? Homework Equations a=vf-vi/t = 26-14/4=3 d=vf^2-vi^2/2a=26^2-14^2/3=80 The answer is 24.5, but I keep getting 80 and I don't know why.

Sometimes when you are taking off a wool sweater by pulling it over your head, you find that your hair is attracted to the sweater. Explain why this is so by referring to the movement of electrons.

Two rods, one brass and the other plastic, have been charged by contact at one end by an ebonite rod rubbed with fur while being supported by an insulator. Compare the distribution of electric charge on the two rods.

Homework Statement A tuning fork w/ frequency of 256 Hz sounded w/ another tuning fork w/ unknown frequency produces 30 beats in 10 seconds. Then, one tine is covered in plasticine and sounded again w/ the unknown frequency tuning fork and produces 20 beats in 10s. What is the frequency of...

How would you determine the frictional resistance between an inclined plane and cart (with wheels) when you are pulling the cart with a spring scale along the plane when you know: mass of cart, vertical height of plane , displacement (hypotenuse of inclined plane), applied force needed to drag...

Homework Statement What could you do to increase efficiency between the cart and the ramp? As in pulling a cart (with wheels) up an inclined plane. Homework Equations The Attempt at a Solution One solution could be increasing the angle to increase efficiency. I was wondering...

I know it has something do do with gravity, but not 100% sure of the explanation.

So I did a lab experiment and found out that the higher the angle, the more efficient the ramp is, and just curious, does anyone know the reason for this? Any info provided would be greatly appreciated.

Okay, so I know that the question sounds odd. But it's basically asking what applications of physics can be used when it comes to a car. Some examples I know are that braking causes friction and the gas pedal causes an applied force. What are some other applications? Mainly in dynamics?

A ball released from the top of the mast of a moving ship lands at the base of the mast. Explain this according to Newtons' first law. I just know that the first law is that if the net force acting on an object is zero, the object will maintain its state of rest or constant velocity. How does...

Apply Newton's First Law of Motion to explain the danger in driving too quickly on a curve of an icy highway. I just know that the first law is that if the net force acting on an object is zero, the object will maintain its state of rest or constant velocity. How does it apply to this scenario?

Hi, I was just wondering how you calculate the average error, is there a certain formula? Ex: Three landing distances were measured and they were 6.93 cm +/- 0.05cm 6.56 cm +/- 0.05cm 6.65 cm +/- 0.05cm To calculate error, do you add the landing distances then divide them by...

I honestly do not know, I've missed a whole month's worth of physics, therefore I'm very behind, I'm trying to get as much help as I can and if I can get guidance on how to do a few questions, that would be helpful. All I know is that this unit is on kinematics.

Hi, I have a few questions that I'm stuck on, any help would be greatly appreciated, and please show the work, so I understand how to do it. 1.If an object is dropped from a height of 2.0m, how long does it take to hit the ground? 2. A driver in a car traveling at 55km/h sees a ball...