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F=ma Problem Set. Practice solving for net force, using Newtons second law (F=ma), and relating F=ma to the acceleration equations.
PHYSICS 11 FORCES & NEWTON’S LAWS WORKSHEET 1 1. Phoebe Physics pulls a wagon with a force of 80 N. a) What is the net force if the force of friction between the wagon and the ground is 12 N? b) If she uses 80 N to pull the wagon through a mud puddle, and the net force on the wagon is 38 N, what friction force acts on the wagon? 2.
For example, “When you pull a door open, what kind of force are you using?” The answer is a “pulling force”. Students learn to identify forces like gravity (what keeps us on the ground), friction (what makes it hard to slide on carpet), and tension (like in a stretched rubber band).
Work Practice Problems Worksheet #1 ANSWER KEY. 1) Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do? Work = Force X Distance Work = 20N X 10m Work = 200 J. 2) How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N?
A bowling ball rolled with a force of 15 N accelerates at a rate of 3 m/sec 2; a second ball rolled with the same force accelerates 4 m/sec 2. What are the masses of the two balls?
m=F/a and a=F/m Example: Engineers at the Johnson Space Center must determine the net force needed for a rocket to achieve an acceleration of 70 m/s2. If the mass of the rocket is 45,000 kg, how much net force must the rocket develop? Using Newton's second law, F=ma F=(45,000 kg)(70 m/s2) = 3,150,000 kg m/s2 F=3,150,000 N Note that the units kg ...
Your friend is pulling upward on an object with force of 3 N. You are pulling to the right with a force of 4 N. Find the net force and the direction the object moves.
