A particle is moving in a straight line. at t second, it acceleration is (4-kt), where k is a constant. when t=6, the acceleration of a particle is zero determine its velocity as a function of time

What are the two most important properties of a telescope?

Which of the following reactions release more energy? fusion reactions nuclear chain reactions fission reactions chemical reactions

What two weather conditions re needed for tornadoes to form

A 8.1-kg rock and a 8.4 * 10-4-kg pebble are held near the surface of the earth. (a) determine the magnitude of the gravitational force exerted on each by the earth. (b) calculate the magnitude of the acceleration of each object when released.

The stimulus-driven process of sensation registers external physical energy and translates it into neutral encoding is know as

An electron is located on the x axis at x0 = - 9.31*10-6 m. Find the magnitude and direction of the electric field at x = 9.39 * 10-6 m on the x axis due to this electron.

Earth attracts a person with a gravitational force of 7.0 * 102 newtons. What is the magnitude of the force with which the individual attracts Earth? 3.0 * 10² newtons 7.0 * 10² newtons 8.5 * 10² newtons 9.8 * 10² newtons

The productive cycle of a human is usually regulated by

Winston stands on the edge of a building's flat roof, 12 m above the ground, and throws a 147.0-g baseball straight down. the ball hits the ground at a speed of 18 m/s. what was the initial speed of the ball?

When is the zebra in motion when it is not moving