A 15-kilogram mass weighs 90 N on planet X. The mass is allowed to fall freely from rest near the surface of the planet. After falling for 2.0 s, the acceleration of the mass is:

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Which component of the earth’s atmosphere is decreased due to photosynthesis?