Physical Science 9 Practice Test for Forces
Solutions
- State any two of Newton's Laws in your own words and explain them using examples.
- Consider a 0.80 kg brick sitting on the ground. Draw the free body diagram for the brick labeling it with the types of forces and their values. Describe the reaction forces here.
- Draw a free body diagram for a ball rolling down a hill naming the forces operating. Include friction.
- Consider a 2000 kg car being towed along a flat road with constant speed and direction. If the cable towing the car is also horizontal and has a tension force of 200N, what will the force of friction be? If the cars hits a patch of oil and the force of friction reduces to 100N, what would the acceleration of the car be? (Bonus: if the car is traveling at 10m/s when it hits the oil patch, how fast will it be traveling 2.0 s later?)
- Create your own scenario. Draw a free body diagram and label it with force types and values. Calculate the acceleration of the object. Give two reaction forces.