Home
Class 9
PHYSICS
The brakes applied to a car produce an a...

The brakes applied to a car produce an acceleration of `6 ms^(-2)` in the opposite direction to the motion. If the car takes 2 s to stop after the application of brakes, calculate the distance traveled during this time.

Text Solution

Verified by Experts

We have been given `a=-6ms^(-2)`, t=2s and v=0
From the equation of motion,
v=u+at
0=u+(-6 x 2 )
0= u -12 `therefore u=12 ms^(-1)`
`s=ut+1//2 at^2`
`=(12 xx 2) +1//2 (-6 xx 2 xx 2)`
=24-12 = 12 m
Thus , the car will move 12 m before it stops after the application of brakes .
Promotional Banner

Topper's Solved these Questions

  • MOTION

    FULL MARKS|Exercise Exercise (Choose the correct answer)|4 Videos

  • MOTION

    FULL MARKS|Exercise Exercise (Fill in the blanks )|4 Videos

  • MAGNETISM AND ELECTROMAGNETISM

    FULL MARKS|Exercise ACTIVITY|1 Videos

  • SOUND

    FULL MARKS|Exercise ADDITIONAL QUESTIONS (Answer the following questions)|8 Videos

Similar Questions

Explore conceptually related problems

A racing car has a uniform acceleration of 4 ms^(-2) . What distance it covers in 10 s after the start ?

A block of mas 2.0 kg is pulled up on a smooth incline of angle 30^0 with the horizontal. If the block moves wth an acceleration of 1.0 m/s^2 , find the power delivered by the pulling force at a time 4.0 s after the motion starts. What is the average power delivered during the 4.0 s after the motion starts?

At a distance L= 400m away from the signal light,brakes are applied to a locomotive moving with a velocity, u = 54 km/h.Determine the position of rest of the locomotive relative to the signal light after 1 min of the application of the brakes if its acceleration a = - 0.3 m/ s^(2)

A car is moving with the accelaration 2 m/ s^(2) from rest. Find the distance traveled by the car in 10th second.

The following velocity-time graph represents a particle moving in the positive x-direction . Analyse its motion from 0 to 7s . Calculate the displacement covered and distance travelled by the particle from 0 to 2s

The initial speed of a body of mass 2.0 kg is 5.0 ms^(-1) a force fro 4s in the direction of motion of the body the force time graph is shown in the diagram calculate the impulse of the force and the final speed of the body

A Proton moves in a iniform magnetic field of strength 0.500 T magnetic field is directed along the x-axis . At initial time, t = 0 s, the proton has velocity vec(v) = (1.95 xx 10^(5) hat(i) + 2.00 xx 10^(5) hat(k) ) ms^(-1) . Find (a) At initial time, what is the acceleration of the proton (b) is the path circular or helical , calculate the radius of helical trajectory and also calculate the pitch of the helix (Note: Pitch of the helix is the distance travelled along the helix axis per revolution ).

A car starts to move from rest with uniform acceleration 10 ms^(-2 ) then after 5 sec, what is its velocity?