# Readers ask: A Car Is Traveling Along A Straight Road And Is Speeding Up. Which One Of The Following Statements?

## What is the acceleration of a car moving along a straight road?

Calculate the acceleration of a car moving along a straight line path. The acceleration is the change of the velocity divided by the elapsed time. This yields. a = Δ v Δ t ⟹ a = v f − v 0 Δ t a = dfrac{Delta v}{ Delta t} hspace{5mm} implies a= dfrac{v_f – v_0}{Delta t} a=ΔtΔv​⟹a=Δtvf​−v0​​

## What is the magnitude of the car’s acceleration?

2.0. Time (s) The magnitude of the car’s acceleration is. 1. 1.0 m/s2 3.

## What is the retardation of the car?

Hence, the distance covered by the car before stopping is 25 m. Note: Note that, negative acceleration is called retardation. Acceleration or retardation is defined by the change in velocity per unit time. Therefore a=v−ut.

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## Which graph shows the motion of the car?

The speed-time graph represents the motion of a car travelling along a straight level road.

## When a car is moving on a road along a straight line?

The rectilinear motion of an object is the motion in which the object moves on a straight linear path with the direction of displacement and velocity in the same direction. The motion of the vehicle is also on a straight path. Thus, the motion of a vehicle on a straight road is a rectilinear motion.

## Which of the following is true for a car running at a constant acceleration on a uniform straight road?

The correct answer is Velocity of the car is constantly changing. We all know that the car is speeding up as we bring our foot down on the accelerator. The rate of change in the velocity of a particle with respect to time is called its acceleration.

## What is the formula for magnitude?

Thus, the formula to determine the magnitude of a vector v = (x1, y1 ) is: |→v|=√x2+y2 | v → | = x 2 + y 2. This formula is derived from the Pythagorean theorem. To determine the magnitude of a three-dimensional vector from its coordinates, Step 1: Identify its components.

## Is magnitude the same as acceleration?

Acceleration is simply a rate of change of velocity. So the magnitude tells you, how quickly velocity changes. That is, your speed changed by 20ms every 2 seconds, or 10ms every second. Thus, when we talk about the magnitude of acceleration, we are talking about how quickly your speed changes in a given unit of time.

## What is the formula for magnitude of acceleration?

Use the magnitude of the force and the mass to find the magnitude of the acceleration: a = F/m = (102 N)/(100 kg) = 1.0 m/s2.

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## What is the formula of retardation?

a = Change in velocity/Time taken So, you can get a negative acceleration value in the case of v<u, that is is known as retardation.

## What is the retardation of the car and how long does it take for the car to stop?

A car moving along a straight highway with speed of 126 km/hr is brought to a stop within a distance of 200 m. What is the retardation of the car (assumed uniform) and how long does it take for the car to stop? Hence, the car will take 11.43 seconds for it to stop.

## When brakes are applied to a moving vehicle?

Hint: Whenever brakes are applied to a moving vehicle, the vehicle doesn’t stop immediately but instead it travels a small distance and then stops. This distance travelled by the moving vehicle before stopping is called stopping distance.