QUESTION 9A minivan is traveling along a straight, level freeway at a constant velocity of 40 m/s when it passes a police car thatis initially at rest on the berm. To catch up to the minivan, the police car accelerates uniformly at 4.0 m/s- along thesame line and direction as the minivan. How long will it take for the police car to catch the minivan?23 s11 s20 s14 s17 s

Answered: Image /qna-images/answer/a318cd17-9e27-4784-902c-7199ae7ac684.jpg

Answered: A minivan is traveling along a…

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 1WUE: Physics Review A hockey player strikes a puck, giving it an initial velocity of 10.0 m/s in the...

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An unwary football player collides with a padded goalpost while running at a velocity of 7.50 m/s and comes to a full stop after compressing the padding and his body 0.350 m. (a) What is his deceleration? (b) How long does the collision last?
An express train passes through a station. It enters with an initial velocity of 22.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. The station is 210 m long. (a) How long is the nose of the train in the station? (b) How fast is it going when the nose leaves the station? (c) If the train is 130 m long, when does the end of the train leave the station? (d) What is the velocity of the end of the train as it leaves?
A swan on a lake gets airborne by flapping its wings and running on top of the water. (a) If the swan must reach a velocity of 6.00 m/s2, to take off and it accelerates from rest at an average rate of 0.350 m/s2, how far will it travel before becoming airborne? (b) How long does this take?
An astronaut on the surface of the Moon fires a cannon to launch an experiment package, which leaves the barrel moving horizontally. Assume the free-fall acceleration on the Moon is one-sixth of that on the Earth. (a) What must the muzzle speed of the package be so that it travels completely around the Moon and returns to its original location? (b) What time interval does this trip around the Moon require?
Physics Review A hockey player strikes a puck, giving it an initial velocity of 10.0 m/s in the positive x-direction. The puck slows uniformly to 6.00 m/s when it has traveled 40.0 m. (a) What is the pucks acceleration? (b) At what velocity is it traveling after 2.00 s? (c) How long does it take to travel 40.0 m? (See Section 2.5.)
A jeepney and a train are moving together along parallel paths at 30.0 m/s, with the jeepney adjacent to the rear of the train. The jeepney driver sees the traffic light turn red, so he accelerates at -2.50 m/s2, and then let his jeepney come to rest. The jeepney is at rest for 50.0 s, and then accelerates at 2.50 m/s2 to go back to a speed of 30.0 m/s. Assuming that the speed of the train remained constant at 30.0 m/s, how far is the jeepney from the rear of the train when the jeepney reaches a speed of 30.0 m/s?
A rock is tossed from the top of a building at an angle of 20° above the horizontal with an initial speed of 15 m/s. The rock lands on the ground 3.0 s after it is tossed. What is the height of the building (in m)? m
A train traveling due to East (+x-axis) with a velocity of v=30 m/s stops with a uniform acceleration in At=60s. What is the acceleration (a) of the train? O a. + 5i m/s² O b. -0.5 i m/s² C. +155 i m/s? O d. -1.55 i m/s²
A clump of soft clay is thrown horizontally from 7.30 m above the ground with a speed of 20.0 m/s. Assume it sticks in place when it hits the ground. a. At what time will the clay hit the ground? answer in seconds b. What is the horizontal distance along the ground after 1.50 s? answer in m
Two ants pass each other one is moving along the negative x axis and one is moving at 45 degrees to the x axis. Ant 1 goes 0.032 and ant 2 goes 0.070 m/s. Ant going .070 m/s begins to accelerate as soon as the two pass each other. The acceleration is .001 m/s2. How far apart will the two ants be after 2 seconds?
A hot air balloon is travelling vertically upward at a constant speed of 3.7 m/s. When it is 27 m above ground, a package is released from the ballon. a) After it's released, for how long is the package in the air in units of s? Acceleration of gravity is 9.8 m/s/s. b)What is the speed just before impact with the ground in m/s? c) Now assume the hot air balloon is traveling vertically downward at a constant speed of 3.7 m/s. After the package is released, how long is it in the air in s? d) What is the speed just before impact with the ground in m/s?
A bird is flying due east. Its distance from a tall building is given by x(t) = 28 m+ (12.4) t-(0.045) ³ t3 a. What is the velocity of the bird when t = 8 seconds? b. What is the acceleration of the bird when t = 8 seconds?

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