COLLEGE PHYSICS
2nd Edition
ISBN: 9781464196393
Author: Freedman
Publisher: MAC HIGHER
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Chapter 6, Problem 8QAP
To determine
The concept of "non-conservative force" and also give three example
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Give an example of a conservative force and a non-conservative force. Please explain, along with examples.
3. a) What is the Impulse-Momentum theorem?
b) Show the connection between the Impulse-
Momentum theorem and Newton's 2nd Law. (use
equations)
hp
Exercise 6. Solve the following problem.
1. A wrecking ball weighing 1,000 kg hits a wall with a speed of 2 m/sec and comes to a stop in 1/100 sec. Calculate
the force experienced by the wallI.
A pilo
Chapter 6 Solutions
COLLEGE PHYSICS
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- Give an example of something think of as work in everyday circumstances that is not work in the scientific sense. Is energy transferred or changed in form in your example? If so, explain how this without doing work.arrow_forwardExercise 6. Solve the following problem. 1. A wrecking ball weighing 1,000 kg hits a wall with a speed of 2 m/sec and comes to a stop in 1/100 sec. Calculate the force experienced by the wall. 2. A pile is driven into the ground by hitting it repeatedly. If the pile is hit by the driver mass at a rate of 100 kg/sec and with a speed of 10 m/sec, calculate the resulting average force on the pile.arrow_forwardGive at least 2 reasons why in collision between two realistic bodies mechanical energy is less likely to be conserved even if air resistance and friction is neglected. Explain.arrow_forward
- Starting from rest, a frictionless mini cart was pushed with a 110-N force for about 12 seconds. It then collides with a wall with an average impact force of 14.7 kN. Calculate the impact time before coming to rest.arrow_forwardh You set up a ramp as depicted to practice your skateboard skills. The ramp is a wooden board L=7.0 m long and is propped up between the ground level at one end and h=0.6 m at the other end. You approach the ramp from the left (lower ground) at 11 m/s. How fast are you once you get past the ramp (higher ground)? Assume your mass is 70 kg and a constant friction of 75 on the ramp.arrow_forwardA 10 kg block is released from rest at the top of a 40 degree incline that is 4 m long. If the speed of the block at the bottom of the incline is 5 m/s, determine the coefficient of friction between the block and incline. Answer question using conservation of energy and momentum concepts.arrow_forward
- *58. A pitcher throws a 0.140-kg baseball, and it approaches the bat at a speed of 40.0 m/s. The bat does W = 70.0 J of work on the ball in hitting it. Ignoring air resistance, determine the speed of the ball after the ball leaves the bat and is 25.0 m above the point of impact.arrow_forwardQ1/ A particle of mass 9 kg is to moves continuously with velocity according to equation V = (20t'i + 12t5j+8t³k) ,where velocity in " and time in second. Find: sec sec a- The acceleration of the particle and the force acting on it at time t. b- The power being delivered to the particle at time t. c- The change of kinetic energy and the work done on the particle in the interval t=2 to t=4 sec. d- The kinetic energy at time equal to 6 second .arrow_forwardA 15-g bullet is shot vertically into an 2-kg block. The block lifts upward 8.0 mm (see the figure).The bullet penetrates the block and comes to rest in it in a time interval of 0.0010 s. Assume theforce on the bullet is constant during penetration and that air resistance is negligible. The initialkinetic energy of the bullet is closest to: A) 21 J B) 0.16 J C) 14 J D) 0.0012 J E) 10 Jarrow_forward
- EXPLANATION MUST BE TYPED - ALL WORK MUST BE TYPED Driving home from school one day, you spot a ball rolling out into the street. You brake for 1.20 s, slowing your 950-kg car from 16.0 m/s to 9.50 m/s. (a) What was the average force exerted on your car during braking? (b) How far did you travel while braking?arrow_forwardAn 18g bullet is fired into 4kg block that is suspended from the ceiling by ropes. The bullet comes embedded into the block. The bullet-block system swings up a maximum vertical height of 12 cm as a result of collision, Find percentage loss of kinetic energy during the collision of the bullet with the block. A 99.6% B) 98.3%arrow_forwardA.) A 7,300-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the collision and move with speed 3 m/s. Compute how much kinetic energy was "lost" in this inelastic collision._______ J B.) A sprinter with a mass of 77 kg reaches a speed of 7 m/s during a race. Find the sprinter's linear momentum (in kg · m/s). (Enter the magnitude.) ________ kg · m/sarrow_forward
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