ACTIVITY 2: ONE-DIMENSIONAL MOTION PROBLEMS Directions: Solve the following problems. Show your solution. Express your final answers in two decimal places. 1. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 meters. Determine the acceleration of the car. 2. A car has uniformly accelerated from rest to a speed of 25 m/s after traveling 75 m. What is its acceleration? 3. Albert is riding his scooter at a velocity of 80 km/hr, when he sees a dog crossing the road 45 m away. He immediately steps hard on the brakes to get the maximum deceleration of 7.5 m/s². How far will he go before stopping? Will he hit the dog? 4. A construction worker accidentally drops a brick from a high scaffold. (a) What is the velocity of the brick after 4.0 s? (b) How far does the brick fall during this time? 5. You decide to flip a coin to determine whether to do your physics or biology homework first. The coin is flipped straight up. (a) What is the velocity of the coin at the top of its trajectory? (b) If the coin reaches a highest point of 0.25 m above where you released it, what w as its initial speed? (c) If you catch it at the same height as you released it, how much time did it spend in the air?
ACTIVITY 2: ONE-DIMENSIONAL MOTION PROBLEMS Directions: Solve the following problems. Show your solution. Express your final answers in two decimal places. 1. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 meters. Determine the acceleration of the car. 2. A car has uniformly accelerated from rest to a speed of 25 m/s after traveling 75 m. What is its acceleration? 3. Albert is riding his scooter at a velocity of 80 km/hr, when he sees a dog crossing the road 45 m away. He immediately steps hard on the brakes to get the maximum deceleration of 7.5 m/s². How far will he go before stopping? Will he hit the dog? 4. A construction worker accidentally drops a brick from a high scaffold. (a) What is the velocity of the brick after 4.0 s? (b) How far does the brick fall during this time? 5. You decide to flip a coin to determine whether to do your physics or biology homework first. The coin is flipped straight up. (a) What is the velocity of the coin at the top of its trajectory? (b) If the coin reaches a highest point of 0.25 m above where you released it, what w as its initial speed? (c) If you catch it at the same height as you released it, how much time did it spend in the air?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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