For the following calculation, ignore air resistance Do not round your answer. Write the answer exactly as it is. An object falls from rest and strikes the ground 19 seconds later. The object's initial height was __ meters.

Which three quantities can be used to calculate acceleration? a. velocity, position and mass b. time, distance and position c. initial velocity, time and force d. time, initial velocity and final velocity

X (t) = (20-4t^2) m, then what its average velocity in between t=0 and t=2sec?

Which describes the food chain for a snake, grasshopper, frog, and grass?

Superposition of two wave crests produces

4. Why is this a double replacement reaction? HCl+Fes - FeCl+H2S

During which period did the first large herbivores and carnivores appear?

What is the reason behind the tail of a comet moving away from the Sun? A The gravity of Jupiter pulls it away from the Sun. The nucleus of the comet propels it away from the Sun. C. The radiation pressure and solar wind propels it away from the Sun.

Calculate the energy released as heat when 51.60 g Cu 2 O (s) undergo oxidation at constant pressure.

During summer vacation, Juan traveled a total distance of 400 miles. His trip took 8 hours. What was the average speed during his trip?

Where Pabs is absolute pressurePg, is gauge pressure, and Patm is atmospheric pressure. For example, if your tire gauge reads 34 lb/incz (pounds per square inch), then the absolute pressure is ...