suppose you hold a book in one hand and a flat sheet of paper into another hand. You dropped them both, and they fall to the ground. Explain why the falling book is good example of free fall, but the paper is not.

Q: A weightlifter raises a barbell with an acceleration of 2 m/s². If the ne A weightlifter raises a…

A: ques: given: a=2 m/s2Fnet=316 N

Q: 18. If a bicycle is moving forward at 100 N and air resistance was 30 N, what is the total force of…

A: The forward-moving force of the bicycle, F=100 N   The air resistance, fair=30 N

Q: The block on the left has a mass of 6-kg and is in contact with the 4-kg block on the right.  Both…

A:

Q: Some people say that the “force of inertia” (or “force of momentum”) throws the passengers forward…

A: To determine: Explain whether the force of inertia throws the passengers forward when a car brakes…

Q: A panda of mass 45 kg is climbing up a vine that can bear a maximum tension of 640 N. Identify in…

A: Given, m = 45 kg g = 10 m/s ( a ) When he accelerates up at 5 m/s2 : T = m (g + a)…

Q: Do you know what is the correlation or the synergy between air resistance and the speed of a falling…

A: The force due to air resistance is proportional to the speed, and is applied in the opposite…

Q: 77. A locomotive is pushing a train at a constant velocity of 3 mis. How does the force exerted by…

A: We use Newton's Laws to find the answer.

Q: A figure skater has a mass of 40 kg and her partner's mass is 50 kg. She pushes against the ice with…

A: where, N=normal forceMg=weight a=accelerationFa=applied forceFr=air resistanceFf=friction

Q: A glider strikes a 0.075-kg block so that its velocity changes by +35 m/s in 0.070 s. With what…

A: Given data:  Mass (m) = 0.075 kg Change in velocity (Δv) = +35 m/s Time (t) = 0.070 s Required: The…

Q: Your friend is on a skateboard. His mass is 70 kg. You push him with a force of 200 N. He…

A: Newton's third law of motion states that for every action, there is an equal and opposite reaction.…

Q: When you take off in a jet aircraft, there is a sensation of being pushed back into the seat.…

A:

Q: Calculate the acceleration of a 320000-kg jumbo jet just before takeoff when the thrust on the…

A: From Newton's second law, F=ma   thus, a=Fm

Q: A 70.0 kg rocket accelerates upwards at 5.00 m/s². Determine the force the engines provide. Include…

A: Draw the FBD of the rocket.

Q: A kid of mass 10.0 kg jumps in a wooden chair of mass 8.00 kg. What is the amount of force that the…

A: Given mass of kid, m = 10.0 kg. The force kid applies to chair = mg ,where g is acceleration due to…

Q: Calculate two blocks acceleration 5 Kg Hx = 0.1 50° 1 Add file 20 Kg HK = 0.2

A: To determine  Acceleration of blocks

Q: "Objects at rest remain at rest; objects in motion remain at constant velocity unless they…

A: Newton's first law of motion states that- 'an object at rest will remain to be at it's state of rest…

Q: 68. A rocket of mass 4.5 X 10 kg is accelerating straight up. Its engines produce an upward thrust…

A: According to the Newton's second law , the vertical net acceleration of the rocket is calculated by…

Q: Suppose that a bullet is fired from a rifle in outer space where there are no appreciable forces due…

A: On firing the bullet from the rifle, it is given that there is no gravity,air resistance, friction…

Q: A passenger sitting in the rear of a bus claims that she was injured as the driver slammed on the…

A: Given statement : A passenger sitting in the rear of bus is injured as a suitcase come flying…

Q: An object that is free-falling is acted upon by the force of gravity alone Select one: O True O…

A: Answer Free fall is a type of motion in which the only force acting upon the object is gravity. The…

Q: A net force of 20 N exerted on a wooden block produces an acceleration of 4 m/s2. The mass of the…

A: SOlution: A net force of 20 N exerted on a wooden block produces an acceleration of 4 m/s2. The mass…

Q: 10 kg 36N 5.0 kg a). Calculate the action-reaction forces the blocks exert on each other.

A:

Q: A car changes its velocity from 20 m/s [N] to 20 m/s [S] in 5.5s. If the mass of the car is 1500 kg…

A: The expression for the net force is F=ma=mvf-vi∆t=1500 kg-20 ms-20 ms5.5 s     North- positive…

Q: Stationary skater A pushes stationary skater B, who then accelerates at 5.0 m/s2. Skater A does not…

A: According to Newton's third law , for every action force there is an equal and opposite reaction…

Q: 65. Which graph best represents the motion of an object on which the net force is zero? Time Time…

A: Option 1 is the correct answer .

Q: A net force of 20 N exerted on a wooden block produces an acceleration of 4 m/s2. The mass of the…

A:

Q: 59. 59. A block of mass 4m can move without friction on a horizontal table. This block is attached…

A:

Q: Four skydivers jump from a helicopter. Diver A: 65 Kg Diver B: 85 Kg Diver C: 100 Kg Diver D: 105 Kg…

A: Free fall is a motion of an object under the influence of gravity, where no other force is working…

Q: A small sports car collides head-on with a massive truck. The greater impact force (in magnitude)…

A: Sports car is small and truck is massive that means mass of car is small then truck. .

Q: As you leap upward in a standing jump, how does the force that you exert on the ground compare with…

A:

Q: Assume the three blocks portrayed in the figure below move on a frictionless surface and a force F =…

A:

Q: How much force Mike is applying to the car? Mike's car, which has a mass of 1,000 kg, is out of gas.…

A: Given  Mass of car m=1000kg Acceleration a=0.05m/s2

Q: A 3600 kg cannon shoots a 38 kg cannonball out with an average acceleration of 145 m/s2 [E].…

A:

Q: You are standing in a moving bus, facing forward, and you suddenly fall forward as the bus comes to…

A: No forces were acting on you to cause you fall.

Q: A 6.00-kg block and an 8.00-kg block are connected as shown. When released, the 6.00-kg block…

A:

Q: Two toy cars (16 kg and 2.0 kg) are released simultaneously on an inclined plane that makes an angle…

A:

Q: Suppose that Cart 3 is taken off of the track and that Cart 1 and Cart 2 collide as previously…

A: Conservation of momentum is used to calculate Cart 2's velocity.…

Q: A 90 kg man on ice skates pushes and a 50 kg boy on skates with a force of 60 N. The magnitude of…

A: Mass of man = 90 Kg  Mass of boy = 50 kg  Force exerted by man on boy = 60 N

Q: Stationary skater A pushes stationary skater B, who then accelerates at 5.0 m/s2 . Skater A does not…

A: According to Newton's third law, for every action force there is an equal and opposite reaction…

Q: Which of the listed scenarios fits this free body diagram best? Fnorm Farav O A book is at rest on a…

A:

Q: A 10-lb rock and a1-lb rock are dropped simultaneously from the same height. Some say that because…

A: I don't agree with the given statement. When we drop 10 lb rock, it experiences greater…

Q: In below Figure, two forces F1, and F2, act on a 5 kg object that is initially at rest. If the…

A: Given: The magnitude of each force is 10 N. The angle between forces is 60o. The mass of the object…

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!