Why friction made it difficult to discover Newton's first law of motion.

A train accelerates from its metropolitan cruising speed of 22 m/s to its countryside cruising speed of 32 m/s. If it takes the train 142 seconds to do this, what is its acceleration? 10 m/s2 14.2 m/s2 4.4 m/s2 0.07 m/s2

A force of 2N will stretch a rubber band 0.02m. Assuming that Hooke's Law applies, answer the following: How far will a 1600N force stretch the rubber band? How much work does it take to stretch the rubber band this far?

Why when you rub two objects together they produce

What is the magnitude of B? speed=2.64*10^7 radius. 160m R=mv/|q|B,

g The ball has a mass of 150 grams. If the ball has a positive charge, what initial velocity must it have at the 200-V level for it to reach its maximum height at the 700-V level

Describe accuracy, precision and best fit line.

Convert 255 cm to meters, millimeters, and kilometers

7.) A car starts from rest and accelerates uniformly at 1.7 m/s/s. How long will it take the car to reach a speed of 34 m/s? A 200 s B 58 s C 20 s D2 s

A wheelbarrow is an example of what type of lever

Why is it necessary to evaluate an experiment