What force is needed to give a 4.5-kg bowling ball an acceleration of 9 m/s

Which of the following statements is untrue in regard to sound traveling in air? A. During a single vibration of the diaphragm, molecules in the air near it will also complete one vibration. B.

a bird has a mass of 0.2kg and is flying 10m above the ground with a speed of 7 m/s. What is the total mechanical energy of the bird?

Suppose a ball had a potential energy of 5 J when you dropped it. What would be it's kinetic energy just as it hit the ground?

Which represent correct variations of the formula for speed?

Suppose a 1,500 kg speedboat is traveling with a velocity of 13 m/s. What is the speedboat's momentum?

The mass of a lift is 600kg. the maximum tensile force that the cable supporting the lift can withstand is 7kN. Calculate:maximum upwards acceleration allowed?

In an experiment if doubling the manipulated variable results in doubling of the responding variable the relationship between the variable is a (n) ?

What color does Indigo turn things?

Why is temperature a good criterion for searching for earth like exoplanets

Supercells are updrafts that may cause which of the following? A hurricanes b blizzards c thunderstorms d tornadoes i think its Thunderstorms or tornadoes