1. Questions

physics: BOB or DRWLS follow up question

What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h?

i understand what you both did, but why can't you use the V = Vo + at equation and solve for acceleration there and use that in the EF = ma equation?

  1. 👍
  2. 👎
  3. 👁
  4. ℹ️
  5. 🚩
beckii

  1. Sure. a= averageforce/m

    Then solve for average force. Same equation.

    1. 👍
    2. 👎
    3. ℹ️
    4. 🚩
    👤
    bobpursley

Respond to this Question

First Name

Your Response

Similar Questions

  1. physics

    A car of mass 1100 kg that is traveling at 27 m/s starts to slow down and comes to a complete stop in 578 m. What is the magnitude of the braking force (in N) acting on the car?

  2. physics

    What average force is required to stop an 1100-kg car in 8.0 s if it is traveling at 95 km/h? i got the answer to be 13062.5 N. i don't think that's right...

  3. Physics

    A car is driven at a constant speed of 21 m/s (76km/h) down a road. The car's engine delivers 52 kW of power. Calculate the average force of friction that is resisting the motion of the car. My thinking: Convert 52 kW to 5200 W.

  4. Math

    The distance require to stop a car varies directly as the square of its speed. If 250 feet are required to stop a car traveling 60 miles per hour, how many feet are required to stop a car traveling 96 miles per hour!

  1. physics

    A certain sports car accelerates from 0 to 60 mph in 9.0 s (average acceleration = 3.0 m/s2). The mass of the car is 1354 kg. The average backward force due to air drag during acceleration is 280 N. Find the forward force required

  2. physical science

    a car traveling along the highway needs a certain amount of force exerted on it to stop.more stopping force may be required when the car has: ;

  3. Science halp

    6.Two cars with different masses travel at the same speed down a hill toward a stop sign. What will happen when both cars apply brakes at the same time to stop? * A. The car with the smaller mass will require less force to stop

  4. Physics

    A 1000 kg car strike a tree at 30 km/hr and comes to a stop in 0.15 s. What is its initial momentum and average force on the car?

  1. Physics -Impulse- part 2

    1) A 0.50 kg object is at rest. A 3.00 N force to the right acts on the object during a time interval of 1.50 s a) What is the impulse? b) What is the velocity of the object at the end of this time interval? 2) A 2250 kg car

  2. physics

    A 1100 kg car coasts on a horizontal road with a speed of 19 m/s. After crossing a an unpaved, sandy stretch of road 32 m long, its speed decreases to 12 m/s. (a) Was the net force done on the car positive, negative, or zero?

  3. Physics

    Suppose a 1,600 kg car is traveling at 20.0 m/s. What average force is needed to stop the car in 4.0 s? Can you explain to me how you got your answer, thank you.

  4. Physics

    A 1100 kg car is moving toward the north along a straight road at a speed of 20.0 m/s. The driver applies the brakes and the car comes to rest in a distance of 140 m. (a) If the road is completely level, what is the constant force

View more similar questions or ask a new question.