A sports car accelerates from rest to 97km/h in 4.2 s. What is its average acceleration in m/s2? Express your answer using two significant figures.

2.73. An automobile and a truck start from rest at the same instant, with the automobile initially at some distance behind the truck. The truck has a constant acceleration of 2.10 m/s², and the automobile an acceleration of 3.40 m/s². The automobile over- takes the truck after the truck has moved 40.0 m. (a) How much time does it take the automobile to overtake the truck? (b) How far was the automobile behind the truck initially? (c) What is the speed of each when they are abreast? (d) On a single graph, sketch the position of each vehicle as a function of time. Take x = 0 at the initial location of the truck.

A burst water pipe in the city means you have to drive at a steady 12 km/h. Once past this obstacle, you speed up to 52 km/h in 10 s. You reach the freeway and, with the same acceleration, speed up for another 10 s to reach a higher speed. What is this final speed in km/h to one decimal place?

Assume that you are driving a car at 10.0 km/h and then you accelerate to 80.0 km/h with an acceleration of 3.50 m/s². How much time will it take until you reach the velocity 80.0 km/h? (Provide you answer in s with two decimal places.) Your Answer:

Eg: A starts with an initial velocity of 10m/s and decelerates at -2 m/s^2. After comes to a full stop, it accelerates with an acceleration of 2 m/s^2 until it reaches 20 m. What is the average velocity in the entire trip?

A ball rolls along flat ground at 7.5 m/s (call this the positive direction) then encounters a hill. If the ball rolls 19 m up the hill before coming to a stop, what was the acceleration (in m/s2) experienced by the ball as it rolled up the hill?

A motorcycle has a constant acceleration of 4.41 m/s2. Both the velocity and acceleration of the motorcycle point in the same direction. How much time, in seconds, is required for the motorcycle to change its speed from 46.2 to 56.2 m/s?

a driver sees a deer in front of his car about 100.0 meters in front of him. the driver was traveling 50.0m/s before applying the brakes and coming to rest right where the deer was. what acceleration did the driver experience? answer in m/s2?

A car is traveling at a steady 81 km/h in a 50 km/h zone. A police motorcycle takes off at the instant the car passes it, accelerating at a steady 8.4 m/s2 . How much time elapses before the motorcycle is moving as fast as the car?

While entering a freeway, a car accelerates from rest at a rate of 2.4 m/s2 for 15 s. What is the cars final velocity in meters per seconds?