Two rubber bands pulling on an object cause it to accelerate at 1.2 m/s2.
a. What will be the object’s acceleration if it is pulled by four rubber bands?
b. What will be the acceleration of two of these objects glued together if they are pulled by two rubber bands?
Learn your wayIncludes step-by-step video
Chapter 5 Solutions
Physics for Scientists and Engineers: A Strategic Approach with Modern Physics, Books a la Carte Edition; Student Workbook for Physics for Scientists ... eText -- ValuePack Access Card (4th Edition)
Additional Science Textbook Solutions
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
The Cosmic Perspective (8th Edition)
Cosmic Perspective Fundamentals
Microbiology: An Introduction
Biology: Life on Earth with Physiology (11th Edition)
Applications and Investigations in Earth Science (9th Edition)
- In t-ball, young players use a bat to hit a stationary ball off a stand. The 140 g ball has about the same mass as a baseball, but it is larger and softer. In one hit, the ball leaves the bat at 12 m/s after being in contact with the bat for 2.0 ms. Assume constant acceleration during the hit. a. What is the acceleration of the ball? b. What is the net force on the ball during the hit?arrow_forward1. A 60.0 kg skydiver is falling through the air (parachute opened). At one point, the acceleration of the skydiver is 4.60 m/s². a. Calculate the force of air friction at that moment. b. What will the force of friction be when the skydiver reaches terminal velocity?arrow_forwardA 12 kg block is placed on a frictionless airtable. A 7 kg block is placed on top of the 12 kgblock and secured with a cord. It takes a 13 Nforce to pull the bottom block from under thetop block. The smaller block is then placed backon the larger block and untied.a. Determine the maximum force that can be applied to the bottom block in order for thetwo blocks to remain together.b. What is their resulting acceleration?arrow_forward
- Your forehead can withstand a force of about 6.0 kN before fracturing, while your cheekbone can only withstand about 1.3 kN. a. If a 140 g baseball strikes your head at 30 m/s and stops in 0.0015 s, what is the magnitude of the ball’s acceleration? b. What is the magnitude of the force that stops the baseball? c. What force does the baseball apply to your head? Explain. d. Are you in danger of a fracture if the ball hits you in the forehead? In the cheek?arrow_forwardA 70-kg man stands on a bathroom scale inside an elevator. The scale measures in units of newtons. a. The elevator accelerates upward from rest at a rate of 1.20 m/s2 for 1.50 s. What does the scale read during this 1.50 s interval? b. The elevator continues upward at constant velocity for 8.50 s. What does the scale read now? c. While still moving upward, the elevator's speed decreases at a rate of 0.600 m/s2 for 3.00 s. What is the scale reading during this time?arrow_forwarda. What is the total acceleration of block B in m/s2 ? b. What is the value of the resulting force in kg? c. What is the value of the velocity in m/s after 4s?arrow_forward
- A 60.0 kg skier is moving down a snowy hill inclined at 5 degrees above the horizontal withan acceleration of 0.4m/s2a. What is the acceleration of the same skier when she is moving down a hill with aslope of 10 degrees? Assume that the coefficient of friction is the same for bothcases.b. How much time will it take her to move 25.0m along 10 degree slope?c. After 25.0m, the slope levels out and becomes flat and smooth. She skis into asnowbank which slows her to a stop in a distance of 0.80m. How much forcedoes the snowbank exert on her?d. How much force does she exert on the snowbank?arrow_forwardA lawn mower is pushed at a constant velocity of 0.76m/s. The person pushes horizontally forwards with 80N. a. What is the force of friction between the mower and the lawn?b. What is the acceleration of the lawn mower?c. How long will it take to push it 10 m?arrow_forwardSiobhan slides a 1.5 kg plate across the table towards you. a. What is the normal force acting on the plate? b.What is the kinetic friction force acting on the plate?The surfaces have ?k = 0.6 . c. Siobhan stops pushing when the plate is moving with speed ?i = 2.5 ?/?.How long will it take for the plate to come to a stop, and how far will it travel?arrow_forward
- A 2.7 kg textbook is sliding on the floor at constant velocity of 0.75 m/s, a. What is the acceleration of the textbook? b. What is the net force on the textbook?arrow_forwardSuppose a 59.0 kg gymnast climbs a rope. a. What is the tension (in N) in the rope if he climbs at a constant speed? b. What is the tension (in N) in the rope if he accelerates upward at a rate of 1.60 m/s2?arrow_forwardA. You push a table, and it starts to move. Does this scenario shows that the third law of motion does not always hold? Explain your answer. B. A stone is kicked from rest ans slides at a constant velocity on a frictionless sheet of ice. What is the total force on the stone after the kick? Explain your answer.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningUniversity Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice University