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A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.5 m/s. At the same instant, a car passes the truck going a constant speed of 15 m/s. Where and when does the truck catch up with the car? 180m, 12s

A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.5 m/s. At the same instant, a car passes the truck going a constant speed of 15 m/s. Where and when does the truck catch up with the car? 180m, 12s

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
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Physics 1 Constant Acceleration 2-Object Problems 1, A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.5 m/s². At the same instant, a car passes the truck going a constant speed of 15 m/s. Where and when does the truck catch up with the car? 180m, 12s 2. During a demolition derby, 2 cars are initially facing each other so they willI be moving in opposite directions. The red car accelerates from rest at 3m/s?. The green car, initially moving at 4m/s, accelerates at 1.8 m/s². If they start 100m from each other, where will they collide? 5.68s at 48.4m 3. During a demolition derby, 2 cars are initially facing each other so they will be moving in opposite directions. The red car, initially traveling at 8m/s, increases speed by accelerating at 3m/s2. The green car, initially moving at 4m/s west, decreases speed with an acceleration of 0.4m/s2. If they start 100m from each other, where will they collide? 5.3s at 84.5m A ball is dropped from 50m above the ground at the same moment a rock is thrown straight up from the ground with an initial velocity of 20m/s. Where and when will they collide? 2.5s, 19.38m 4. 5. A driver unknowingly passes a cop while traveling at 11m/s while accelerating at 1.4m/s2. From the moment the driver passes the cop, it takes the cop 1.75 seconds to start the car and hit the gas. The cop car accelerates at 4.3m/s2. (Hint.) Treat this like a 2 part problem. Part 1: Just the car moving for 1.75 seconds. Part 2: Both cars moving) (a) How long will it take for the cop to catch up to the driver? 10.66s b) How far will the cop travel? 244.3m chrome
Transcribed Image Text:Physics 1 Constant Acceleration 2-Object Problems 1, A truck is stopped at a stoplight. When the light turns green, the truck accelerates at 2.5 m/s². At the same instant, a car passes the truck going a constant speed of 15 m/s. Where and when does the truck catch up with the car? 180m, 12s 2. During a demolition derby, 2 cars are initially facing each other so they willI be moving in opposite directions. The red car accelerates from rest at 3m/s?. The green car, initially moving at 4m/s, accelerates at 1.8 m/s². If they start 100m from each other, where will they collide? 5.68s at 48.4m 3. During a demolition derby, 2 cars are initially facing each other so they will be moving in opposite directions. The red car, initially traveling at 8m/s, increases speed by accelerating at 3m/s2. The green car, initially moving at 4m/s west, decreases speed with an acceleration of 0.4m/s2. If they start 100m from each other, where will they collide? 5.3s at 84.5m A ball is dropped from 50m above the ground at the same moment a rock is thrown straight up from the ground with an initial velocity of 20m/s. Where and when will they collide? 2.5s, 19.38m 4. 5. A driver unknowingly passes a cop while traveling at 11m/s while accelerating at 1.4m/s2. From the moment the driver passes the cop, it takes the cop 1.75 seconds to start the car and hit the gas. The cop car accelerates at 4.3m/s2. (Hint.) Treat this like a 2 part problem. Part 1: Just the car moving for 1.75 seconds. Part 2: Both cars moving) (a) How long will it take for the cop to catch up to the driver? 10.66s b) How far will the cop travel? 244.3m chrome
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