Please help me to solve thisassignment. I shall be very thankful to you and awar
ID: 1675846 • Letter: P
Question
Please help me to solve thisassignment. I shall be very thankful to you and awardmaximum points.Part. 1
After your sports car breakdown, you start to push it to thenearest repair shop. While the car is starting to move, how does the force you exert on thecar compare to the force the car exerts on you? How do these forces compare when you arepushing the car along at a constant speed.
Part. 2
Suppose a gliding bird is caught in an updraft so that itascends at a steady rate, in this situation, which has greater magnitude; the force of gravityor the upward force of the air on the bird.
Part. 3
The standing child is pushing the child seated on the swing.Is the seated child pushing back? If so, is he pushing with the same amount of force or adifferent amount?
Part 4
A typical sprinter speeds up during the first third of a raceand slows gradually over the rest of the course. Is it accurate to say that a sprinter isaccelerating as he slows during the final two-thirds of the race? I shall be very thankful to you and awardmaximum points.
Part. 1
After your sports car breakdown, you start to push it to thenearest repair shop. While the car is starting to move, how does the force you exert on thecar compare to the force the car exerts on you? How do these forces compare when you arepushing the car along at a constant speed.
Part. 2
Suppose a gliding bird is caught in an updraft so that itascends at a steady rate, in this situation, which has greater magnitude; the force of gravityor the upward force of the air on the bird.
Part. 3
The standing child is pushing the child seated on the swing.Is the seated child pushing back? If so, is he pushing with the same amount of force or adifferent amount?
Part 4
A typical sprinter speeds up during the first third of a raceand slows gradually over the rest of the course. Is it accurate to say that a sprinter isaccelerating as he slows during the final two-thirds of the race? Part. 1
After your sports car breakdown, you start to push it to thenearest repair shop. While the car is starting to move, how does the force you exert on thecar compare to the force the car exerts on you? How do these forces compare when you arepushing the car along at a constant speed.
Part. 2
Suppose a gliding bird is caught in an updraft so that itascends at a steady rate, in this situation, which has greater magnitude; the force of gravityor the upward force of the air on the bird.
Part. 3
The standing child is pushing the child seated on the swing.Is the seated child pushing back? If so, is he pushing with the same amount of force or adifferent amount?
Part 4
A typical sprinter speeds up during the first third of a raceand slows gradually over the rest of the course. Is it accurate to say that a sprinter isaccelerating as he slows during the final two-thirds of the race?
Explanation / Answer
1. object at rest tends to stay at rest, or object in motiontend to stay in motion at constant speed unless acted upon byexternal forces 2. a body will accelerate with an acceleration proportional tothe force and inversely proportional to the mass (F=ma) 3. every action has an equal and opposite reaction
so part 1 as the car starts moving the force being generated by you mustbe greater than the force exerted on you by the car (if they werethe same or less the car would not move. when moving the car atconstant speed the acceleration of the car is zero so the net forcemust be zero so the forces must be equal but with oppositedirections
part2 since the bird is rising the updraft must have greatermagnitude
part3 yes he's pushing back but with a different amount since thekid on the swing accelerates after the push the standing kid exertsmore force
part 4 yes by the definition of acceleration (change invelocity/change in time) as long as there is some change of speedwhether positive or negative its still an acceleration
hope this helps