# Is a car moving at 80 km hr subjected to uniform retardation?

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## Is a car moving at 80 km hr subjected to uniform retardation?

In this case, the final velocity is 0 km/h and the initial velocity is 80 km/h. The time is 70 s. Therefore, the retardation of the car is -20/63 m/s^2 and the distance traveled by the car before it comes to rest is 777.78 m.

## How far do you travel moving at an average speed of 80 km h for 30 min?

30 minutes is 1/2 hour or 0.5 hours. Therefore, distance = 80 x 0.5 = 40 kilometers.

## What is the formula for 80km h to m s?

To convert kilometres per hour (km/h) to metres per second (m/s), multiply by 5/18. So 80 km/h → 80 * 5/18 = 22 and 2/9 m/s. To four significant figures, 22.22 m/s.

## What is the distance travelled by a car which traveled at a speed of 80km hr for 3 hours and 30 minutes?

Distance = Speed x Time = 80 x 7/2 = 280 kms. Therefore, the distance travelled by the car moving at a speed of 80 kmph for 3 hours 30 minutes is 240 kms.

## What is the formula of retarding force?

M x retardation Therefor F = ( V – U)*M/ t.

## What is the formula for retardation in maths?

Hence, the expression for retardation is a = v − u t , when . Q. What is meant by retardation?

## How to calculate speed?

Speed tells us how fast something or someone is travelling. You can find the average speed of an object if you know the distance travelled and the time it took. The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time.

## What is the formula for average travel speed?

It is calculated by dividing the total distance something travels by the total amount of time it spends traveling. For example, one can consider the car from earlier. If the car travels 70 miles in 2 hours, it would have an average speed of 70 / 2 = 35 miles per hour. It would thus have a speed of 35mph.

## How far do you travel if you travel 80 mph for 1 hour?

If you’re going 80 mph, it will take you 1 hour to go 80 miles. The abbreviation ”mph” means miles per hour. Therefore, 80 mph means 80 miles per hour. Hence if someone is traveling at 80 miles per hour, it means that they travel 80 miles every 1 hour, so this tells us that it would take them 1 hour to go 80 miles.

## What is the formula for 90 km h to m s?

For example, to convert 90 km/h to m/s, we multiply 90 with 5/18. After simplifying, we get, (5/18) × 90 = 25 m/s. Therefore, 90 km/h is equal to 25 m/s.

## What is 100 km in miles per hour?

Answer: 100 km/h is equal to 62.14 mph So, 100 km/h is equal to 62.14 miles per hour. You can refer metric conversion chart for easy calculations and more clarity.

## How to convert 36 km per hour into 10 m per second?

⇒36 km/hr=36×100060×60=36036=10m/s.

## Is a car moving with constant speed is said to be in uniform motion?

The motion of object is said to be a uniform motion if the speed of the object is constant. Thus motion of car moving with constant velocity is an example of uniform motion.

## What is the uniform motion of a moving car?

An car would have ‘uniform motion’ when it travels with same constant velocity or doesn’t have acceleration. that means if car’s engine applies the force equal to friction force of the road so that net force of car would be zero.

## Is the speed of the car always in uniform motion?

When a body travels equal distance in equal interval of time, speed of the body is said to be uniform. Speed of vehicle is not always uniform because traffic, red light and other factors influence the speed of vehicle.

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

What is the retardation of the car (assumed uniform) and how long does it take for the car to stop? Within 200 m, an automobile traveling at 126 km/hr on a straight roadway comes to a complete halt. The retardation of the car ‘a’ is – 3.06 m/s2 and the time taken by the car to stop is t is 11.43 s.