# Can a car moving with speed V on a straight road can be stopped in distance D on applying brakes if the same car

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## Can a car moving with speed V on a straight road can be stopped in distance D on applying brakes if the same car

Hence, answer is 18d. A car moving with a speed of 40 km/h can be stopped by applying brakes at least after 2m.

## What is the speed V of a car moving on a straight road changes?

The velocity of a car moving on a straight road Increases linearly according to equation, v = a + bx, where a & b are positive constants.

## What is the velocity of the two vehicles after the collision?

From the conservation of momentum, the formula during a collision is given by: m1v1 + m2v2 = m1v’1 + m2v’2. If the collision is perfectly inelastic, the final velocity of the system is determined using v’ = (m1v1 + m2v2)/m1 + m2.

## Can a car moving with speed V on a straight track be stopped?

A car moving with speed v on a straight track can be stopped in a distance x by applying brakes. If same car is moving with speed 2v and brakes provide half the retardation then car will stop after travelling distance.

## Can a car moving with speed V on a straight road be stopped?

A car moving with speed v on a straight road can be stopped with in distance d on applying brakes. id same car is moving with speed 3v and brakes provide half retardation, then car will stop after travelling distance.

## What is the motion of a car moving in a straight road?

Car moving on a straight road is an example of rectilinear motion. When two particles of a body travel same distance along 2 parallel straight lines then that is known as Rectilinear motion or straight-line motion.

## What is the speed and the velocity of car moving on a straight path covers a distance of 1 km due east in hundred?

A car moving on a straight path covers a distance of 1 km due east in 100 s. What is (i) the speed and (ii) the velocity, of car ? Ans. (i) 10 m s’, (ii) 10 m s due east.

## What is the velocity of a moving vehicle?

The velocity of a moving car is given by v = X t + Y t where v is the velocity and t is the time. Then the SI units of X and Y respectively will be: m ; ms.

## What is final velocity?

Initial and Final Velocity Initial velocity describes how fast an object travels when gravity first applies force on the object. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration.

## Is momentum always conserved?

Momentum is always conserved because there is no external force acting on an isolated system (like the universe). Since momentum can never change, all of its components will always remain constant. Problems brought on by collisions should be resolved using the rule of conservation of momentum.

## What is the formula of change in momentum?

Step 1: Identify the mass of the object, , the initial velocity of the object, , and the final velocity of the object, . Step 2: Calculate the change in momentum, which is equal to the impulse, , using the formula Δ p = m ( v f − v i ) .

## Is braking distance depending on speed?

Braking distance depends on how fast a vehicle is travelling before the brakes are applied, and is proportional to the square of the initial speed. This means that even small increases in speed mean significantly longer braking distances.

## Why does speed affect the stopping distance of a car?

Speed of the vehicle – the faster a vehicle is travelling, the greater the braking force needed to stop the car. This means that the braking distance will also increase, meaning that the total stopping distance will also increase.

## What is the minimum distance in which the car will stop?

Virtually all current production vehicles’ published road braking performance tests indicate stopping distances from 60 mph that are typically 120 to 140 feet, slightly less than half of the projected safety distances.

## Why if you double the speed of a car the distance required to stop the car will be four times as much?

The brake power required to stop a vehicle varies directly with its weight and the “square” of its speed. For example, if weight is doubled, stopping power must be doubled to stop in the same distance. If speed is doubled, stopping power must be increased four times to stop in the same distance.