When designing an experiment how do you choose a system to investigate

What is true about the direction of the force of friction?

Compare the sum of the kinetic and potential energies of the pendulum at position A to the sum at position C. (Ignore friction.)

1. Which of the following is carried by the waves from one place to another? a) Velocity b) Energy c) Mass d) Wavelength

Which of the following describes the measure of the flow of electrical charge? A. watts B. volts C. Ohms D. amperes

How much force is required to accelerate an 1800 kg truck 3 m/s

Voltage can exist without A. current. B. resistance. C. a closed circuit. D. all of these

During a football game, a receiver has just caught a pass and is standing still. Before he can move, a tackler, running at a velocity of 2.60 m/s, grabs and holds onto him so that they move off together with a velocity of 1.30 m/s.

What effect does an increase in temperature have on viscosity?

Aman tosses a jart upward with a velocity of 14.1 m/s a 60° angle

Describe accuracy, precision and best fit line.