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

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## 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.

## When a car is moving on a straight road with constant speed then?

According to work energy theorem, the work done by the car is zero. Since the kinetic energy does not change and the car is moving along a straight horizontal road the work done is zero only if there is no non conservative force like friction. If there is friction then work done will be force into displacement.

## What would be the net force on the car if it were moving to the left?

A)If a car is moving to the left with constant velocity then the net force applied to the car is zero. B) An object cannot remain at rest unless the net force acting on it is zero.

## How can you calculate the speed of an object traveling in a straight line?

The equation for speed is simple: distance divided by time. You take the distance traveled (for example 3 meters), and divide it by the time (three seconds) to get the speed (one meter per second).

## What is the motion of a car along a straight line?

A car moving on a straight road is an example of rectilinear motion.

## When a car is moving with a constant speed along a straight road there is no net work done by external forces?

According to Newton’s first law of motion, any object moving at constant velocity has no net external force acting upon it, which means that the sum of the forces acting on the object must be zero. The mathematical way to say that no net external force acts on an object is Fnet= 0 or ΣF=0.

## What is the slope of a straight line graph of position vs time?

What does the slope represent on a position graph? The slope of a position graph represents the velocity of the object. So the value of the slope at a particular time represents the velocity of the object at that instant.

## What causes the motion of a car on a road?

The force of static friction is what pushes your car forward.

## What does Newton’s 2nd law state?

Newton’s second law of motion states that F = ma, or net force is equal to mass times acceleration. A larger net force acting on an object causes a larger acceleration, and objects with larger mass require more force to accelerate.

## What is Newton’s second law of speed?

His second law defines a force to be equal to change in momentum (mass times velocity) per change in time. Momentum is defined to be the mass m of an object times its velocity V.

## How do you find the net force of a car?

- F is the net force.
- m is the mass of the object.
- a is acceleration.

## What are the 3 formulas for velocity?

- v = u + at.
- v² = u² + 2as.
- s = ut + ½at²

## Is speed and velocity the same in a straight line?

Speed and velocity will be equal for uniform motions along a straight line.

## What is the SI unit of speed?

The SI unit of speed is the meter per second, abbreviated as m/s or ms-1.

## What is the velocity of a car traveling on a straight line?

The velocity of a car travelling on a straight road is given by the equation v = 9 + 8 t – t 2 where v is in metre per second and t in second.

## 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.

## 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 car’s change velocity?

We can recall that if an object changes its velocity by an amount Δ𝑣 and it does this over a time Δ𝑡, then the average acceleration 𝑎 of that object is given by Δ𝑣 divided by Δ𝑡. The change in velocity of the car is going to be equal to the car’s final velocity 𝑣 two minus its initial velocity 𝑣 one.