A 8kg object falls what is it weight

Find the speed required to throw a ball straight up and have it return 6 seconds later. neglect air resistance. how high does the ball go?

Which of the following is described as: assumes the shape of the container, not easily compressible and flows easily? - solid -liquid -gas -plasma

What does grazing incidence means?

Which of these is equivalent to the law of conservation of energy? A. The total mechanical energy is always conserved. B. Friction is a nonconservative force. C. Kinetic energy can be transformed into thermal energy. D.

Which condition causes ocean salinity to decrease? A. low levels of evaportation B. thawing of polar ice caps C. ocean water flowing into rivers D. low levels of precipitation

How does the potential energy of an object change when its height is tripled

Equal masses are suspended from two separate wires made of the same material. The wires have identical lengths. The first wire has a larger cross-sectional area than the second wire. Which wire will stretch the LEAST? a.

The milky way galaxy is the galaxy that is closest to us contains the most stars is farthest from us contains our solar system

Which fundamental force has a small range and is always an attractive force?

A 77-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.87 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.