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Name: Date: Problems: 1. The dimensions of a reservoir are as follows: 2-m long, 3-m wide...
A car going 5 m/s accelerates at 2 m/s^2 for 3 seconds. Then he travels at...
A car going 5 m/s accelerates at 2 m/s^2 for 3 seconds. Then he travels at a constant velocity for 4 seconds. What is the total distance traveled in the 7 seconds and what is the final speed of the car?
A car accelerates from rest at S m/s for 5 seconds. It moves with a constant...
A car accelerates from rest at S m/s for 5 seconds. It moves with a constant velocity for 15 seconds, and then decelerates at 5 m/s to come to rest in 5 seconds. The entire journey takes 25 seconds. Plot the velocity-time graph of the motion AND determine the total distance the car travelled. (10 pts.) 4.
P2.4-4) A car initially traveling at 60 mph coasts for 5 seconds. Due to friction and...
P2.4-4) A car initially traveling at 60 mph coasts for 5 seconds. Due to friction and wind resistance, the car decelerates while coasting at a rate of 1 ft/s2. After the 5 seconds of coasting, the driver applies the brakes and decelerates at a constant rate eventually bringing the car to a stop. If the total time that the car travels is 8 seconds, determine the car's braking acceleration. Given: Find: Solution: Draw the acceleration and velocity curves. v (ft/s)...
A car accelerates at 5 m/s^2 for 8 seconds. The direction of its acceleration is due...
A car accelerates at 5 m/s^2 for 8 seconds. The direction of its acceleration is due east. If its initial velocity was 7 m/s, also due east, what is its speed during this time interval? Round your answer to the two decimals. ________ A car accelerates at 7 m/s^2 for 2 seconds. The direction of its acceleration is due east (east = positive direction). If its initial velocity was 47 m/s, due west, what is its final velocity? Round your...
1. The velocity of an object traveling along the x-axis changes from 20 m/s to 60...
1. The velocity of an object traveling along the x-axis changes from 20 m/s to 60 m/s in 10 seconds. What was the displacement that occurred during this time? 2. An object moving along the x-axis initially has a velocity of 60 m/s and is slowing rest? down at the rate of 4 m/s per second. How far (in meters) will it travel before coming to 3. An accelerating object travels 12 meters from rest in a certain time. How...
PROBLEMS and QUESTIONS 1. An object moves across the floor and comes to a stop. Explain...
PROBLEMS and QUESTIONS 1. An object moves across the floor and comes to a stop. Explain how Aristotle and Galileo would view this motion differently. 2. Explain the difference between speed and velocity and give examples of each. 3. Explain how an object can have a constant speed and a varying velocity. 4. What are the units of acceleration? 5. If an automobile travels at the rate of 40 miles per hour, how long will it take to travel 400...
1) At the instant shown, car A is traveling East with a velocity of 25 m/s...
1) At the instant shown, car A is traveling East with a velocity of 25 m/s and car B just exited the highway through a ramp with a radius of curvature of 150 meters and is traveling with a velocity of 20 m/s heading in the direction shown in the illustration below. Car A accelerates with a rate of 2.5 m/s, while car B decelerates with a rate of 2.0 m/s. Find: a) Draw a diagram displaying all vectors for...
A hiker travels 2 km due east of his starting point. Then he travels 1 km...
A hiker travels 2 km due east of his starting point. Then he travels 1 km northwest. Finally, he travels 3 km due north. How far is the hiker from his starting point after the 3 displacements and in what direction? Draw the three displacement vectors to scale and add them graphically Find the magnitude and direction of A, B and A + B for A = -4i – 7j and B = 3i – 2j . Describe the following...
Please show work 1. A 0.25 km wide river has a uniform flow speed of 4.2...
Please show work
1. A 0.25 km wide river has a uniform flow speed of 4.2 m/s toward the east. It takes 23 s for a boat departing from the south bank to travel straight across the river to a position directly north of its departure. a) In what direction must the boat be pointed so as to accomplish this? Express your final answer relative to the North direction. (Hint: Start by drawing a right triangle representing the vector addition)...
3. During a very quick stop, a car decelerates at 6.2 m/s2. Assume the forward motion...
3. During a very quick stop, a car decelerates at 6.2 m/s2. Assume the forward motion of the car corresponds to a positive direction for the rotation of the tires (and that they do not slip on the pavement). a. What is the angular acceleration of its tires in rad/s2, assuming they have a radius of 0.28 m and do not slip on the pavement? b. How many revolutions do the tires make before coming to rest, given their initial...
A car accelerates from rest at S m/s for 5 seconds. It moves with a constant velocity for 15 seconds, and then decelerates at 5 m/s to come to rest in 5 seconds. The entire journey takes 25 seconds. Plot the velocity-time graph of the motion AND determine the total distance the car travelled. (10 pts.) 4.
P2.4-4) A car initially traveling at 60 mph coasts for 5 seconds. Due to friction and wind resistance, the car decelerates while coasting at a rate of 1 ft/s2. After the 5 seconds of coasting, the driver applies the brakes and decelerates at a constant rate eventually bringing the car to a stop. If the total time that the car travels is 8 seconds, determine the car's braking acceleration. Given: Find: Solution: Draw the acceleration and velocity curves. v (ft/s)...
A car accelerates at 5 m/s^2 for 8 seconds. The direction of its acceleration is due east. If its initial velocity was 7 m/s, also due east, what is its speed during this time interval? Round your answer to the two decimals. ________ A car accelerates at 7 m/s^2 for 2 seconds. The direction of its acceleration is due east (east = positive direction). If its initial velocity was 47 m/s, due west, what is its final velocity? Round your...
1. The velocity of an object traveling along the x-axis changes from 20 m/s to 60 m/s in 10 seconds. What was the displacement that occurred during this time? 2. An object moving along the x-axis initially has a velocity of 60 m/s and is slowing rest? down at the rate of 4 m/s per second. How far (in meters) will it travel before coming to 3. An accelerating object travels 12 meters from rest in a certain time. How...
PROBLEMS and QUESTIONS 1. An object moves across the floor and comes to a stop. Explain how Aristotle and Galileo would view this motion differently. 2. Explain the difference between speed and velocity and give examples of each. 3. Explain how an object can have a constant speed and a varying velocity. 4. What are the units of acceleration? 5. If an automobile travels at the rate of 40 miles per hour, how long will it take to travel 400...
1) At the instant shown, car A is traveling East with a velocity of 25 m/s and car B just exited the highway through a ramp with a radius of curvature of 150 meters and is traveling with a velocity of 20 m/s heading in the direction shown in the illustration below. Car A accelerates with a rate of 2.5 m/s, while car B decelerates with a rate of 2.0 m/s. Find: a) Draw a diagram displaying all vectors for...
Please show work
1. A 0.25 km wide river has a uniform flow speed of 4.2 m/s toward the east. It takes 23 s for a boat departing from the south bank to travel straight across the river to a position directly north of its departure. a) In what direction must the boat be pointed so as to accomplish this? Express your final answer relative to the North direction. (Hint: Start by drawing a right triangle representing the vector addition)...
3. During a very quick stop, a car decelerates at 6.2 m/s2. Assume the forward motion of the car corresponds to a positive direction for the rotation of the tires (and that they do not slip on the pavement). a. What is the angular acceleration of its tires in rad/s2, assuming they have a radius of 0.28 m and do not slip on the pavement? b. How many revolutions do the tires make before coming to rest, given their initial...
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