needed help on these 3 questions that I don't quite understand. Can someone please explain to me how to solve the answer?
Use this scenario to answer questions 1-3:
A car crashes in a tree at a velocity -26.6 m/s. The passenger in the car is wearing a seat belt and is stopped in 2.2 seconds. The mass of the passenger is 50 kg.
1. According the Newton's first law, what will the passenger's motion tend to be during the crash?
2. What was the force acting on the passenger?
3. What was the action and reaction force acting on the seat belt?
I don't need the answers; if I could just please get an explanation on these. Thanks a million!! =]
-MC
Certainly! I'd be happy to help you understand how to solve these questions.
1. According to Newton's first law of motion, also known as the law of inertia, an object will remain at rest or continue moving at a constant velocity in a straight line unless acted upon by an external force. In the scenario given, the passenger in the car is crashing into a tree. This means there is an external force acting on the passenger, which causes a change in motion. As a result, the passenger's motion will tend to be stopped by the force exerted in the crash.
2. To determine the force acting on the passenger, we can use Newton's second law of motion which states that the force acting on an object is equal to its mass multiplied by its acceleration. In this scenario, the passenger's mass is given as 50 kg and we can calculate the acceleration using the formula a = (final velocity - initial velocity) / time. The final velocity is 0 m/s (since the passenger is stopped) and the initial velocity is -26.6 m/s (since the car crashes at a velocity of -26.6 m/s). The time taken for the passenger to stop is 2.2 seconds. By plugging in these values into the formula, you can calculate the acceleration, and then multiply it by the mass of the passenger to find the force acting on the passenger.
3. According to Newton's third law of motion, for every action, there is an equal and opposite reaction. In this scenario, when the passenger crashes into the seat belt, there is an action force exerted on the seat belt by the passenger. The reaction force will be exerted by the seat belt on the passenger, in the opposite direction. So the action force is the force exerted by the passenger on the seat belt, and the reaction force is the force exerted by the seat belt on the passenger.
By using the principles of Newton's laws of motion, you can find the answers to these three questions. Good luck!