An object accelerates at 5 m/s2, over a 3 second time period to a final velocity of 20 m/s. What is the initial velocity?

A ball is thrown straight up with a speed of 3/frac{m}{s}, and it hits the ground with a speed of 15/frac{m}{s}. How tall is the tower? Ignore air resistance, and answer in meters.

An element's atomic number is 13. How many protons would an atom of this element have?

A 55.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300. What horizontal force must be applied to the box for it to start sliding along the surface?

Which is the most accurate description of compounds? O A) They are not pure substances. OB) They are made of only 1 type of atom. OC) They are the basic building blocks of matter.

Can the range equationbe used to findthe horizontal distance travelled for a baseballif it is hit at a height of 1 m andcaught at a height of 2.3 m?

Why does the closed top of a convertible bulge when the car is riding along a highway? Why does the closed top of a convertible bulge when the car is riding along a highway? The air pressure is greater outside the car than inside.

Is a white shirt cooler or warmer in the sunlight?

A stone is thrown vertically upward with a speed of 18.0. (a) How fast is it moving when it reaches a height of 11.0? (b) How long is required to reach this height? For part A) I did: y=11m, g=9.

What object or class of objects makes up most of the solar systemâs mass?

Carole is very tired and makes coffee. why would newton say that she must use her hand to put up the cup