You have a box of pencils and each one has a cross-section of 0.002 m2. the maximum stress that each pencil can take is 22,500 pascals. how many pencils could be broken at once by a force of 135 newtons?

An object moves from the position +34m to the position -15m in 15 seconds. what is it's total displacement? what is it's average velocity?

This is important. 1. which of the following is an si base unit for measuring length? (2 points) inch gram meter mole 2. which of the following units for distance is an si unit? (2 points) centimeter foot inch yard 3. which of the following tools should a scientist use to measure an object in meters? (2 points) electronic balance pan balance tape measure thermometer

If an athlete runs once around a track, back to the starting line, her average velocity is zero. true or false?