A 5 kg book falls from a shelf. If it lands at a speed of 5.7 m/s, from what height did it fall?

Name the parts of an atom and their corresponding charge

According to Newton's thirdlaw, every action has an equal and opposite reaction. When a comb is charged and held near small pieces of paper, the comb exerts an electric force on the paper pieces and pulls them toward it.

Rank the objects below from least to greatest momentum: A car travelling down the highway A book falling from a table A butterfly flying through the air The school building

Two hockey players, Z and X, are standing face-to-face and stationary on the ice. Skater Z has a mass of 72.5 kg. Skater X has a mass of 65.3 kg. Skater Z shoves Skater X. Which statement below best represents the skaters' momenta after the shove? 1.

What is the origin of all stars? a. supernova b. dwarfs c. protostars d. nebulae

Two copper wires with different diameters are joined end to end. If a current flows in the wire combination, what happens to electrons when they move from the larger-diameter wire into the smaller-diameter wire?

A baseball player is warming up and tosses a ball straight up into the air. The ball travels up until it reaches some maximum height, and then falls back down to the player/'s hand.

Volume can be measured in liters or cubic meters. a. T b. F

A spring with a spring constant of 1200 N/m has a 55-g ball at its end. The energy of the system is 5.5J. What is the amplitude of vibration?

Force F1 acts on a particle and does work W1. Force F2 acts simultaneously on the particle and does work W2. The speed of the particle does not change. Which one of the following must be true? a. W1 is zero, and W2 is positiveb. W1 = - W2c.