If an object moving in one direction slows down, then the direction of its acceleration is to the direction of its motion.

If an object moving in one direction slows down, then the direction of its acceleration is to the direction of its motion.

Related Posts

This Post Has 7 Comments

  1. I think it is... If an object moving in one direction slows down, then the direction of its acceleration is negative to the direction of its motion.

  2. When a net zero external unbalanced force is applied on the body, it is possible for the object to be travelling with a non-zero velocity. In fact, once an object comes into motion and there is a condition in which its motion is unopposed by any external force; the object will continue to remain in motion.

    (2) If a carpet is beaten with a stick then the carpet begins to move. But, the particles of dust are trying to resist their state of rest. The dust particles remain in a state of rest, while the carpet moves, as per Newton's first law of motion. The particles of dust thus emerge from the carpet.

    (3) If any luggage kept on the roof of the bus is not tied with a rope, then it tends to move forward due to its inertia. In this process, it could fall off the bus. Therfore, it is advised to tie any luggage kept on the roof of a bus with a rope.

    (4) After covering a short distance, the ball comes to rest because there is frictional force on the ball opposing its motion. Frictional force always acts in the direction opposite to the direction of motion. Hence, this force is responsible for stopping the cricket ball.

    (5) Given data:

    Mass of stone(m)=7000 kg

    Distance(S)=400 meter

    Time(t)=20 second

    1) We have to find the acceleration of the truck

    So from the equation of motion S=ut+

    2

    1

    a×t

    2

    , whereu=0

    S=

    2

    1

    a×t

    2

    a=

    t

    2

    2×S

    =

    20×20

    2×400

    =2

    sec

    2

    m

    (6) Initial velocity of the stone, u= 20 m/s

    Final velocity of the stone, v= 0

    Distance covered by the stone, s= 50 m

    We know the third equation of motion

    v²=u²+2as

    Substituting the known values in the above equation we get,

    0² = (20)²+2(a)(50)

    -400 = 100a

    a = -400/100 = -4m/s² (retardation)

    We know that

    F = m×a

    Substituting above obtained value of a=-4 in F= m x awe get,

    F = 1×(-4) = -4N

    (Here the negative sign indicates the opposing force which is Friction)

    (7) What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s2?. Hence, the force between the automobile and the road is ˆ'2550 N, in the direction opposite to the motion of the automobile.

    (8) The cabinet will move with constant velocity only when the net force on it is zero. Therefore, force of friction on the cabinet = 200 N, in a direction opposite to the direction of motion of the cabinet.

    Explanation:

    I hope that it's help you

  3. You could say that or just say that it is opposite to the motion car traveling at 35m/s moving towards the right slows down then that means that the acceleration is in the negative direction to the left

Leave a Reply

Your email address will not be published. Required fields are marked *