Recent content by helpme1

can u show me a formula and how to do it

i have no any opinion. i am not physicst, and i don't study it. but this semester i have to read it as a life knowledge subject. so, please help me to complete these tests. i need ur help urgently.

oh sorry. there is no any eq in front of x and y, can u put one for me and explain it for me

Homework Statement the motion of a particle of mass m=10kg is described by the equation x= y= where x and y are in meters and t in seconds. Determine the velocity acceleration of the particle and the force acting on it. Homework Equations The Attempt at a Solution

How will be changed the kinetic energy of a particle if its velocity will be ... Homework Statement How will be changed the kinetic energy of a particle if its velocity will be decreased ... times ? Homework Equations The Attempt at a Solution

wow, it's right. :) thanks for your valuable response. but be ready, the newswaves will not stop! ;)lol

direction of velocity. right?

no one could find the true answer?

ah thanks! :) you are helpful. i did it by thinking. at last i did a physics test my own (of course with your help)

n physics, and more specifically kinematics, acceleration is the change in velocity over time. Because velocity is a vector, it can change in two ways: a change in magnitude and/or a change in direction. In one dimension, acceleration is the rate at which something speeds up or slows down...

impulse ?

Homework Statement Normal acceleration characterizes the change in... Homework Equations a. value of velocity b. direction of velocity. c. value of angular velocity d. direction of angular velocity e. value of force The Attempt at a Solution which one is true ? thanks in advance.

sorry i don't know.

thanks for your response. but then the answer of question is Force ? right.

Force.