# Applied Physics: Newton's Laws and Kinetics

1. State and explain Newton's Three Laws of motion, giving examples from daily life.

2. A 1500 kg car is accelerating at a constant rate. In two seconds, its velocity goes from 10 to 30 km/hr. What is the total force acting on the car, in N?

3. An astronaut in his space suit has a total mass of 300 kg. His weight on the asteroid Ceres is 2.00 N. What is the acceleration of gravity on Erewhon?

4. A 50 kg cannon shell is subjected to a constant acceleration of 1200 g while in the cannon barrel. What force is the burning propellant exerting on the shell?

5. Four forces, represented by four vectors, are plotted in standard position on the Cartesian plane. The lengths of the vectors, in arbitrary units, represent the strength of the forces in N. The forces are being applied to an object with a mass of 1 kg, located at the origin. In what direction will the object accelerate, and how rapidly? The force vectors are A(5,5) B(-3,-2) C(-1, 6) and D(-6, 3).

https://brainmass.com/physics/acceleration/applied-physics-newtons-laws-kinetics-523011

#### Solution Preview

1. Law I). Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it.

A real life example is a ball rolling from the top of the downhill and eventually stops on the road because friction exerts on it.

Law II)The relationship between an object's mass m, its acceleration a, and the ...

#### Solution Summary

The solution discusses Newton's laws and kinetics.