1.lf you were in a spaceship and fired a cannonball into space, how much force would have to be exerted on the ball to keep it moving once it has left the spaceship?
2.Many automobile passengers have suffered neck injuries when struck by cars from behind. How does Newton's law of inertia apply here?
3.Explain how Newton's first law of motion is related to the concept of inertia.
2.Many automobile passengers have suffered neck injuries when struck by cars from behind. How does Newton's law of inertia apply here?
3.Explain how Newton's first law of motion is related to the concept of inertia.
Answers & Comments
QUESTION;
1.lf you were in a spaceship and fired a cannonball into space, how much force would have to be exerted on the ball to keep it moving once it has left the spaceship?
ANSWER:If you were in a spaceship and fired a cannonball into frictionless space, how much force would have to be exerted on the ball to keep moving once it has left the spaceship? A: Absolutely none! Once the ball is sent out into space there is no drag to slow it down.
QUESTION;
2.Many automobile passengers have suffered neck injuries when struck by cars from behind. How does Newton's law of inertia apply here?
ANSWER:The car suddenly accelerates and you are dragged in your seat. While your neck also feels the shock but is supported by the headrest. {This is the inertia that first tries to get you in the rest when your car speeds up (accelerates) and you are pushed in your seat.
QUESTION;
3.Explain how Newton's first law of motion is related to the concept of inertia.
ANSWER:Newton's first law of motion states that a body at rest remains at rest, or, if in motion, remains in motion at a constant velocity unless acted on by a net external force. ... Inertia is the tendency of an object to remain at rest or remain in motion. Inertia is related to an object's mass.