Two identical cars A and B are travelling in the same direction, A 10m behind B, at the same constant speed of 28m/s. B puts on their brakes and starts to decelerate at -10m/s2. A does not put on their brakes. 1. How long after B applied their brakes will A hit B? 2. What speed will B be travelling by this time?
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- 1. A bicyclist is finishing his repair of a flat tire when a friend rides by with a constant speed of 4.0 m/s. Three seconds later the bicyclist hops on his bike and begins to follow the friend with an initial speed of 10 m/s. Assume the bicyclist continues at a constant speed of 10 m/s until he catches the friend. a) Calculate the time it takes to catch his friend. b) How fast is he moving when he catches his friend? c) How far did he travel to catch his friend?A trooper is moving due south along the freeway at a speed of 35 m/s. At time t = 0,a red car passes the trooper. The red car moves with constant velocity of 48 m/s southward. At the instant the trooper's car is passed, the trooper begins to speed up at a constant rate of 2.9 m/s2. What is the maximum distance ahead of the trooper that is reached by the red car? ?m1. A train leaves the station on a 50 km commute. The train must make a 60-second stopevery 1.0 km to pick up and drop off passengers. The train accelerates at 2.0 m/s2, then cruises at90 km/h, and then decelerates at 5.0 m/s2 between stops.(a.} How many stops does the train make?(b.} How long does it take for the train to get from one stop to the next?(c.} What is the total time for the entire commute?
- David is driving at a steady 30 m/s when he passes Linda, who is sitting in her car at rest. Linda then begins to accelerate at a steady 2 m/s^2. At the instant, David passes her. a. How far does Linda drive before passing David? B. What is her speed as she passes him?10. A person is driving along a straight highway at a speed of 22.0 m/s when the traffic light which is 41.0 m ahead turns yellow. Because of his "reaction time", there is a delay of 0.11 s before the man steps on the brake. The car then slows with a deceleration of 4.40 m/s2. By how much distance does the driver miss the traffic light line? 50 ssi sf60 sf60 60 ssf60%1. A car moving with constant acceleration covers the distance between two points 58.0 m apart in 6.20 s. Its speed as it passes the second point is 15.0 m/s. a.) What is the speed at the first point? b.) What is the acceleration? c.) At what prior distance from the first point was the car at rest?
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- Mohammed is driving his car at 80 km/hr speed from Alaya and Ahmed is driving his car at 60 km/hr from Thapti. If both start at the same time, with Ahmed 200 m ahead, the time in which Mohammed catches Ahmed will be a. 3.6036 s b. 360.36 s c. 36.036 s d. 18.018s15. Hello, Can you please help me with the next problem? 15. Two friends talk on the phone to meet,both come out at the same time in their respective bicycles; one of them with a speed of 25 km/h and the other with a speed of 30 Km/h. If the distance that initially separates them is 120 km:1. How far are they from each other's house?2. How long after dating do they meet? Thank you in advance!Q1.An electron, in a picture tube of a TV set, travelling in a straight line, accelerates uniformly from speed 4.3x10^4 to 9.0x10^6 m/s along a lenght of 2.3 cm. (15) a. How much time does the electron spend in this 2 cm region? b. What is the magnitude of the electron's acceleration?