concepts that play a role in this problem. Car A uses tires for which the coefficient of static friction is 0.286 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 28.2 m/s. Car B uses tires for which the coefficient of static friction is 0.719 on the same curve. What is the maximum speed at which car B can negotiate the curve? Units

concepts that play a role in this problem. Car A uses tires for which the coefficient of static friction is 0.286 on a particular unbanked curve. The maximum speed at which the car can negotiate this curve is 28.2 m/s. Car B uses tires for which the coefficient of static friction is 0.719 on the same curve. What is the maximum speed at which car B can negotiate the curve? Units

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 82P: To maintain a constant speed, the force provided by a car’s engine must equal the drag force plus...

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I watched a lot of Looney Toons when I was a kid, and liked that the Roadrunners legs would spin for a second or two before their claws caught traction. a. With a coefficient of kinetic friction 0.2 what acceleration will the roadrunner experience while their feet are sliding accross the ground? b. How far forward will the roadrunner drift in a half second, starting from rest under this acceleration? c. After catching traction the Roadrunner accelerates away, travelling 10 m to get offscreen in one fifth of a second. What was their coefficient of static friction?
Q5. a) The graph shows the motion of an RC helicopter. What will be the average speed from point ‘A’ to point ‘G’. Between which two points (A-B or E-F) will the speed be more? Calculate.
Consider dropping a baseball from rest at an altitude of 300 m. Assume that the baseball has a drag coefficient of 0.3, a mass of 0.145 kg, and a radius of 3.7 cm. a. What is the terminal speed vT of this baseball? b. Calculate the characteristic time tT = vT / |g|. c. Set up the Newton application to model this situation. Let's agree that the ball has essentially reached its terminal velocity when its acceleration falls below |g| / 20. About how long must the baseball fall to reach terminal velocity according to this criterion? Express your answer as a multiple of the characteristic time tT. (Hints: Equation N9.17 might be helpful as you set up the program. A time step of 0.1 seconds works pretty well.) Equation N9.17: az = -|g| * (1 - (vz2 / vT2))
A 70 kg box is resting on a reclining floor. The coefficient of fricion between the floor and the box is: static = 0.30, kinetic = 0.10. If the floor is to be inclined at an angle of 25 deg a. what would be the acceleration of the object along the direction of the inclined floor? b. what would be the vertical displacement of the box after 1.5 seconds? Express your answer in unit of meters. c. what is the total distance travelled by the box after 1.5 seconds? Express your answer in unit of meters.
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You need to push a couch 4 m to the other side of the room. After the initial push to get it going you push on the 90kg couch with a steady horizontal force of 600 N. The coefficient of kinetic friction between the couch and the floor is 0.6. 1. What is the magnitude and direction of the frictional force on the couch? 2. What is the magnitude and direction of the net force on the couch? 3. What is the magnitude and direction of the acceleration of the couch?
1)A shingle slides down a roof having a 30 angle and falls off with a speed of 2.0 m/s.a. How long will it take to hit the ground?b. Calculate the highest point reached by it. 2)A 20.0 kg trunk is pushed across the floor of a moving van by a horizontal force. If thecoefficient of kinetic friction between the trunk and the floor is 0.255, what is the magnitudeof the frictional force opposing the applied force?
a frictionless plane is 10.0 m long and inclined at 31.0 degree a sled starts at the bottom with an initial speed of 5.40 m/s up to incline. when the sled reaches the point at which it momentarily stops, a second sled is released from the top of the incline with an initial speed v1. both sleds reach the bottom of the cline at the same time. A. determine the distance that the first sled traveled up the incline. ___________ m Determine the initial speed of the second sled _________ m/s