A vehicle with an initial speed of 70km/h, accelerates at 6000 km/h^2 on a straight pavement. How long will the car drive to end up with a speed of 120 km/h? What is the distance that the car travels within the timeframe?
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- You are driving down the highway late one night at 20 m/s when a deer steps onto the road 35 m in front of you. Your reaction time before stepping on the brakes is 0.50 s, and the maximum deceleration of your car is 10 m/s?. How much distance is between you and the deer when you come to a stop?A baseball pitcher delivers a fast ball. During the throw, the speed of the ball increases from 0 to 30.0 m/s over a time of 0.100 seconds. The average acceleration of the baseball is m/s?.You travel 1000 m in 25 seconds, accelerating the whole time at a constant rate. What is the rate of acceleration? Initial velocity (vi) = 0 m/s.
- A particle moves in a straight line with a constant acceleration of -6 m s-2. At t = 0, the velocity of the is 20 m s-1. Taking the positive x-axis to be in the direction that the particle is initially moving, with the origin at the location of the particle at t=0, at what time is the position of the particle given by x = -100m? The position is x = -100m after ____ seconds?A spacecraft is always headed north, starts at 90m/s, and maintains a constant acceleration of 0.7m/s2 for 3.9 min. What is it's displacement during this time? Round your answer to 3 significant digits, and don't forget the units.At the instant the traffic light turns green, a car that has been waiting at an intersection starts with a constant acceleration of 8 feet per second per second. At the same instant, a truck traveling with a constant velocity of 48 feet per second passes the car.(a) How far beyond its starting point will the car pass the truck?ft (b) How fast will the car be traveling when it passes the truck?ft/sec
- A model rocket is launched straight upward with an initial speed of 40.0 m/s. It accelerates with a constant upward acceleration of 1.50 m/s2 until its engines stop at an altitude of 180 m. what is the max height reached by rocket? how long after liftoff does the rocket reach its max-height? how long is the rocket in the air?A jet plane has a takeoff speed of V= 103 m/sec and can move along the runway at an average acceleration of 1.75 m/s2. a) What is the distance needed for take-off? (b) How much time is required for take-off?A car accelerates in the +x direction from rest with a constant acceleration of a1 = 1.55 m/s2 for t1 = 20 s. At that point the driver notices a tree limb that has fallen on the road and brakes hard for t2 = 5 s until it comes to a stop. How far, in meters, from the original location of the limb will the car be when it stops?