A driver is traveling 18.4 m/s when she sees a red light ahead. Her car is capable of decelerating at a rate of 3.55 m/s^2 If it takes her 0.390s to get the brakes on and she is 20.0m from the intersection when she sees the light, will she be able to stop in time? No. How far from the beginning of the intersection will she be?

A cannon on a flat railroad car travels to the east with its barrel tilted 30∘ above horizontal. It fires a cannonball at 50 m/s. At t= 0 s, the car, starting from rest, begins to accelerate to the east at 4.0 m/s2. At what time should the cannon be fired to hit a target on the tracks that is 360 m to the east of the car's initial position? Assume that the cannonball is fired from ground level.

#4

Two cars are driving, car 1 has initial position -3500m, initial velocity -55m/s and acceleration +1.25m/s2, car 2 has initial position +4100m, initial velocity -35 m/s and acceleration +0.75m/s2;   a) How much time until they collide? b) What is the x location where they collide, and the final velocity of each car?

A person drives 120km [N32W] in a car to his friend's place to visit. He then drives 150km [W24N] to visit family. He does this in 2.5 hours. (a) What was their total displacement. (b) What was their average speed (c) What was their average velocity

While driving at 45.0 mi/hr (20.1 m/s) on a straight portion of Route 9 West, Randi notices that the traffic light has turned red at the intersection directly ahead. Randi applies his brakes, slows his car down at a steady rate, and brings his car to rest, while traveling the 60.0 m distance to the stop line (at the red light). 21. While he is slowing down, the acceleration of Randi's car has a magnitude of A. 6.73 m, В. 16.9 m 2. 169 m/: А. С. 33,8 т D. 9.80 m E. 3.37 m / 22. How much time passes as Randi's car slows down from 45.0 mi/hr to 0 m/s? A. 20.68 s. B. 5.97 s. C. 2.66 s. D. 2.99 s. E. 0.596 s. 23. While Randi's car is slowing down, his car's acceleration is A. directed straight down towards the Earth's center. B. equal to zero. C. directed straight upwards. D. directed parallel to the car's velocity. E. directed antiparallel to the car's velocity.

A car was traveling at 33.0 m/s on a poorly lit country road.  The driver started to brake 0.35 seconds after he sees that a bridge is under construction 75 meters ahead.  The car slowed down uniformly.  What must be the minimum acceleration be to avoid crashing into the construction?

Assuming the positive direction points North, which of these situations results in a positive velocity and a negative acceleration? A car driving North and speeding up. A plane flying North and slowing down. O A bicycle riding South and speeding up. O An athlete running South and slowing down. O t is impossible to have a positive velocity and a negative acceleration.

#2

A car is traveling at a constant velocity of magnitude v0v0 when the driver notices a garbage can on the road in front of him. At that moment, the distance between the garbage can and the front of the car is ddd. A time treacttreact after noticing the garbage can, the driver applies the brakes and slows down at a constant rate before coming to a halt just before the garbage can. What is the magnitude of the car's acceleration after the brakes are applied?   What is |a_x| =