A 0.14-kg baseball is dropped from rest from a height of 2.0 m above the ground. what is the magnitude of its momentum just before it hits the ground if we neglect air resistance?

1. Mr. Ure has a mass of 65 kg, due to the fact that he is WAY too skinny! What is the force of Earth's gravity on him? 2. The force of Earth's gravity on a car is 3,050 Newtons. What is the car's mass in kg? 3. Mr. Rees has a mass of 90 kg.

This is a subatomic particle with no charge and a mass of 1 amu.

Brian is a healthy young man. He has been training with his teammates for a 50-yard dash for months. However, even with practice, he cannot run fast enough to qualify. What is the most likely reason that Brian can't qualify?

What does an atomic number describe? The number of nuclei The number of protons The number of neutrons The number of electrons

A book is 6 cm high, 22 cm wide, and 40 cm long. What is the volume of the book? A. 4,860 cm³ B. 5,280 cm³ C. 5,860 cm³ D. 6,280 cm³

Visit this website and locate the element mercury, whose chemical symbol is Hg. Click on the square to read about the history, properties, and uses of mercury. Name three uses for mercury.

Ten seconds after starting from rest, a car is moving at 40 m/s. what is the car's acceleration in meters per second per second?

A student builds a simple circuit and a magnet under one of the circuit wires. When the switch is closed charges flow int the circuit and the wire moves

Cite an example in which a force is exerted on an object without doing work on the object

Which equation best expresses the first law of thermodynamics, assuming Q is heat, U is internal energy, and W is work? A.ΔW = ΔQ + ΔU B.ΔW = ΔU - ΔQ C.ΔQ = ΔU+W D.ΔU=Q - W