1) An automobile with an initial speed of 4.30 m/s accelerates uniformly at the rate of 3.0 m/s^2. Find the final speed and displacement after 5.0 s.
2) A driver of a car traveling at 15.0 m/s applies the brakes, causing a uniform acceleration of -2.0 m/s^2. How long does it take the car to accelerate to a final speed of 10.0 m/s? How far has the car moved during the braking period?
3) A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 3.2 km in 3.5 min. How fast is the car moving after this time.
THE ANSWER IS 24 m/s...I am just not getting it.
thanks.
2) A driver of a car traveling at 15.0 m/s applies the brakes, causing a uniform acceleration of -2.0 m/s^2. How long does it take the car to accelerate to a final speed of 10.0 m/s? How far has the car moved during the braking period?
3) A car enters the freeway with a speed of 6.4 m/s and accelerates uniformly for 3.2 km in 3.5 min. How fast is the car moving after this time.
THE ANSWER IS 24 m/s...I am just not getting it.
thanks.