What is acceleration?

What is the acceleration during takeoff of a jumbo jet, with a mass of 33,000 kg when the thrust for each..?

• What is the acceleration during takeoff of a jumbo jet, with a mass of 33,000 kg when the thrust for each of its four engines is 30,000 N? A net force on to a 2 kg cart accelerates the cart at 6 m/s2. How much acceleration will the same net force produce on a 7 kg cart? If a loaded truck that can accelerate at 2 m/s2 loses its load and has four-fifths of its original mass, what acceleration can it attain if the same driving force acts on it?

• Answer:

  These are all just applications of F = ma In the first one F = sum of all forces = 30,000 * 4, rearrange the formula so it reads a = F/m where F is the sum of all forces. 2nd one is F = ma and that gives you F (for m = 2kg and a = 6m/s^2) then rearrange with the same F and calculate a = F/m with the same F and the larger m (7kg) Last one assumes same Force so m1a1 = m2a2 calculate a2 a2 = m1a1/m2 You know that m2 = 4/5 m1 so a2 = 5m1a1/4m1 = 5/4 * a1 The least you can do is substitute the numbers in from here so you feel you have done something towards answering your homework ;)