4. (7 pts) A car is travelling with constant speed down the highway at 33.5 m/s. At the instant this car passes an entrance ramp, a second car enters the highway, starting from zero at the beginning of the ramp. What constant acceleration must the second car have in order to catch the first car in 2.50 km?
4. (7 pts) A car is travelling with constant speed down the highway at 33.5 m/s....
A car is traveling at a constant speed of 25 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration must it maintain, so that the two cars meet for the first time at the next exit, which is 2.7 km away?
A car is traveling at a constant speed of 18 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration must it maintain, so that the two cars meet for the first time at the next exit, which is 1.9 km away?
A car is traveling at a constant speed of 27 m/s on a highway. At the instant this car passes an entrance ramp, a second car enters the highway from the ramp. The second car starts from rest and has a constant acceleration. What acceleration must it maintain, so that the two cars meet for the first time at the next exit, which is 2.3 km away?
A car is travelling at constant speed of 60m/s on a highway. Another car needed to refuel so starting from rest, it leaves the area with an acceleration of 7m/2. It takes 3s for this car to enter the highway. This car keeps its acceleration constant on the highway. How long does it take for the entering car to catch the one that is travelling at 60m/s?
B) An ambulance travels east down a highway at a speed of 33.5 m/s, and its siren emits a sound frequency at a frequency of 400 Hz. What frequency is heard by a person in a car traveling west at 24.6 m/s: a) as the car approaches the ambulance ? (8 pts) b) as the car moves away from the ambulance ? (7 pts) (Take the speed of sound to be 343 m/s)
An ambulance travels east down a highway at a speed of 33.5 m/s, and its siren emits a sound frequency at a frequency of 400 Hz. What frequency is heard by a person in a car traveling west at 24.6 m/s: a) as the car approaches the ambulance ? b) as the car moves away from the ambulance ? (Take the speed of sound to be 343 m/s) PLEASE INCLUDE WRITTEN EXPLANATION
Car 1 starts from rest along a straight highway with constant acceleration a = 1 m/s2. Car 2 passes car 1 with constant velocity of 120 km/hr. Which car is acted on by a larger net force? a- The net force on both cars is zero. b- Car 2 c-Both cars are acted on by the same non-zero net force. d-Car 1
Question 2 10 pts A fast moving vehicle travelling at a speed of 28.1 m/s comes up behind another vehicle which is travelling at a slower, constant speed of 13.6 m/s. If the faster vehicle does not begin braking until it is 12.1 meters away from the car in front of it, what is the minimum acceleration that the faster car must exhibit if it is to avoid colliding with the car in front? Assume that both cars are travelling...
Car A travels East at a constant velocity of 25 m/s on
a highway I-70 which is 27km North of where I-75 intersects Route
4. Car B accelerates from rest with a constant acceleration of
.581m/s^2 along Route 4 the instant that Car A passes it. The cars
collide. What angle does Route 4 make with North.
I'm driving down the highway in my car, at a speed of 25 m/s. Some jerk cuts me off and rapidly slows down, so I have to slam on my brakes to avoid hitting him. (a) If I brake for 5.0 s down to a speed of 15 m/s, what was my acceleration during that period? You may assume that my acceleration was constant. (b) What distance did I travel during the period in which I was braking?