95. •Medical During a front-end car collision from 48 km/h and with air bags inflated, the acceleration limit for the chest is 60g as the car comes to rest. The trunk of the body comprises about 43% of body weight. (a) For how much time does this acceleration last, assuming it is constant? (b) Draw a free-body diagram of a person dur- ing the crash. (c) What force in newtons does the air bag exert on the chest of a 72-kg person? (d) Why doesn't the

Q: 4) A 25.0 kg box is being pulled east across the ground with a horizontal force of 110 N. If the…

A:

Q: 5.79 •• Block A in Fig. P5.79 weighs 1.20 N, and block B weighs 3.60 N. The coefficient of kinetic…

A:

Q: 63. Box A weighs 80 N and rests on a table (Figure 4-41). A rope that connects boxes A and B drapes…

A:

Q: A 10kg object is initially moving east at constant speed. A net external force of 20N directed wes…

A: Required :  The correct option.

Q: A 2-kg object is thrown upwards with an initial velocity of 16 m/s. At the peak of the trajectory,…

A:

Q: 16

A:

Q: 1. Are the following statements True or False? ● ● ● All moving objects have a natural tendency to…

A:

Q: There are two forces on the 1.00 kg box in the overhead view of figure at the right, but only one is…

A: It is given that,

Q: 51. •A block of mass M rests on a 5.00-kg block which is on a tabletop (Figure 5-29). A light string…

A: Solution

Q: A baseball falls from the top of a skyscraper. When it reaches half the terminal speed, the ball…

A:

Q: A man of mass M = 75.0 kg and woman of mass m = 55.0 kg stand facing each other on an ice rink, both…

A: Given data, mass of man, M = 75 kg mass of woman, m =55 kg force with which the woman pushed the…

Q: 81. ••In Figure 4-47, the block on the left incline is 6 kg. Find the mass of the block on the right…

A: Mass on left incline (M) = 6 kg Angle of incline on the left side (θ1) = 60oMass on right incline =…

Q: 50. •A 25-kg crate rests on a level floor. A horizontal force of 50 N accelerates the crate at 1…

A: Mass of crate (m) = 25 kg Applied force (F) = 50 N Acceleration (a) = 1 ms2

Q: If a 120-kg wooden crate rests on a wood floor a) determine the maximum force you can apply…

A:

Q: A real-world example that exemplifies the relationship between net force and acceleration, with…

A: Consider a lawn mower at rest being pushed.

Q: 10 A 2kg block is started from the rest to slide down on an incine rough plane at the angle of 37…

A: Given data, Mass m = 2 kg. Angle of inclination θ=370. Coefficient of kinetic friction μ=0.4

Q: terring to Example Suppose that the contact force between the boxes to have a magnitude of 5.00 N,…

A: Given: Contact force f=5 N Applied force,F=20 N = F = 20 N Mass of box 1, m1=10 kg

Q: A 3.0 kg cinder block is dragged down  a    ( horizontal) picnic table.  If the coefficient of…

A:

Q: Written Challenge Problem, Newton's Third Law: A block of mass 1.0 kg sits on top of one of mass 2.0…

A:

Q: 56. **A 2.85-kg object is held in place on an inclined plane that makes an angle of 40° with the…

A:

Q: 85. •A 30-kg golden retriever stands on a digital scale. If the dog and scale are positioned in a…

A: The reading scale will measure the normal reaction due to all the forces

Q: Louis left a book on the roof of his car before driving away. The of the book was 758 grams. The…

A: Givenmass of book , m=758 g=0.758 kgThe coefficient of static friction between the book and the…

Q: Question 5 of 10 A student drew the data of the relation between the acceleration and the net force…

A:

Q: A man of mass 75.0 kg is standing in an elevator which is accelerating upward at 2.00 m/s². a) Draw…

A: The mass of the man is 75 kg.The acceleration of the elevator is 2 m/s2 in an upward direction.

Q: 3) A 2700-kg airplane pulls two gliders, the first of mass 210 kg and the second of mass 235 kg,…

A:

Q: 101. .Two blocks connected by a light string are being pulled across a frictionless horizontal…

A:

Q: 54. **A 2-kg box rests on top of a 5-kg crate (Fig- ure 5-32). The coefficient of static friction…

A: The mass of the box is m = 2 kg. The mass of the crate is M = 5 kg. The tension in the string is…

Q: 84. ••The terminal velocity of a raindrop that is 4.0 mm in diameter is approximately 8.5 m/s under…

A: Given: The diameter of the raindrop is 4.0 mm. The velocity is 8.5 m/s. The density of water is 1000…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!