A car is moving in the positive x direction at 20 m/s and comes up behind a truck and is unable to pass.the car slow to15 m/s in a time 2s. calculate car's average acceleration.

A car moving on a straight road accelerates from a speed of 4.1 m/s to a speed of 6.9 m/s in 5.0 s. What was its average acceleration?

A car is moving with a velocity of 20 m/s. The driver sees a stationary truck ahead at a distance of 100 m. After some reaction time Deltat the brakes are applied producing a retardation of 4 m//s^2 ? What is the maximum reaction time to avoid collision ?

Two cars A and B are moving in same direction with velocities 30 m/s and 20 m/s. When car A is at a distance d behind the car B, the driver of the car A applies brakes producing uniform retardation of 2m//s^(2) . There will be no collision when :-

A motor car A is travelling with a velocity of 20 m/s in the north-west direction and another motor car B is travelling with a velocity of 15 m/s in the north-east direction. The magnitude of relative velocity of B with respect to A is

A car is moving with a speed of 10m s^(-1) , If the east direction taken as x-axis and the north direction as y-axis . Write the velocity vector of car in unit vector notation.If it is moving (a) in the direction of N-E,(b) in the direction of N-W ,(C ) in the direction of S-W , and (d) in the direction of S-E .

A car is moving rectilinearly on a horizontal path with acceleration a_(0) .A person sitting inside the car observes that an insect S is crawling up the screen with an acceleration a.If theta is the inclination of the wind screen with the horizontal, then the acceleration of the insect.

At t=0 and x=0 , an initially stationary blue car begins to accelerate at a constant rate of 2.0m//s^(2) in the positive direction of the x -axis At =t = 2s a red car travelling in an adjecent lane and in the same direction passes x =0 with a speed of 8.0 m//s and a constant accleration of 3.0 m//s^(2) .the time when red car passes the blue car is :

A car is moving at a speed of 40 m/s on a circular track of radius 400 m. this speed is increasing at the rate of 3 m/ s^(2) . The acceleration of car is

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