# Physics

A car moving at 89 km per hour is subjected to a ation to brought to rest in 70 second. Find ation and distance

1. 👍 0
2. 👎 0
3. 👁 196
1. change km/hr to m/s
vf=vi+at
vf=0 you can solve for a, the deacceleration. For distance,
avg velocity= vi/2 so distance= avgvelocity*time

1. 👍 0
2. 👎 0
👨‍🏫
bobpursley

## Similar Questions

1. ### Math

A mall charges 25pesos for the first hour or a fraction of an hour as parking fee. An additional 25pesos is charged for every additional hour, or a fraction of an hour of parking. The parking area operates from 7A.M. to 12

2. ### Math

The tires on a car are 25 inches in diameter. If the car is moving at a constant speed of 65 miles per hour, how many rotations per second is the front left tire making? Express your answer as a decimal to the nearest tenth. (1

3. ### math

if a car moving at a constant rate travel (2x³-x²-4x+3)km in (x²-2x+1) hours what is the rate of the car in km per hour? I need it asap thanks

4. ### Physics

During a road test,a driver brakes a 1420kg car moving at 64.8km/h [W]. The car slows down and comes to a stop after moving 729m [W]. What is the net force acting on the car?

1. ### physics

A race car is moving with a velocity of 144 kilometers/hour. The driver applies the brakes, and the car comes to a halt in 12.0 seconds. What is the average acceleration of the car during those 12.0 seconds?

2. ### physics

A car is moving at 80km/h is subjected to a uniform retardation and brought to rest in 70seconds.find retardation and distance travelled by the car before it comes to rest.

3. ### Physical Science

If a 1500 kg car is moving 20.0 m/s is brought to a stop by brakes. How many kilocalories of heat are generated in the process? Please include the formula that I should use to find the answer. -Thanks

4. ### college math

two cars are approaching an intersection one is 3 miles south of the intersection and is moving at a constant speed of 20 miles per hour. at the same time the other car is 4 miles east of the intersection and is moving at the

1. ### Math

You're on a skateboard, moving very fast but at a constant speed. Are you accelerating? Explain. Lara Claims that if an object is accelerating, it must be moving. She also claims that if an object is not accelerating, it must be

2. ### Science

A car is braked so that it slows down with a uniform retardation from 15m/s to 7m/s while it travels a distance of 88m. If a car continues to slow down at the same rate, after what further distance will it be brought to rest?

3. ### physics

A car that weighs 15,000 N is initially moving at 60 km/hr when the brakes are applied. The car is brought to a stop in 30 m. Assuming the force applied by the brakes is constant, determine the magnitude of the braking force.

4. ### physics

A car of mass 500kg travelling at 36km/hr brought to rest over a distance of 20m calculate 1.The average retardation 2.The average braking force