Why can it hurt your foot more to kick a big rock than a small pebble? Must the big rock hurt more? Explain.

Q: Some of the top drag racers in the world are able to reach speeds of 530 km/h over a distance of…

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Q: "The value of gravity acceleration (g), is equal to" O 9.8 m/s2 O 980 cm/s2 Both (a) and (b) O None…

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Q: Bob pushes on a frictionless cart of mass 6.9 kg and the cart has an acceleration of 7.7 m/s2. If…

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Q: How much tension must a cable withstand if it is used to accelerate a 1800-kg car vertically upward…

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Q: The mass of a given airplane at sea level (g = 9.81 m/s2) is 10 tons. Find its weight in N when it…

A: Refer attachment

Q: Determine the tension in the rope using Newton's 2nd Law. Hint: it is NOT 20 Ib. WA = 20 lb W = 20…

A: Consider the free-body diagram of both blocks as follows.

Q: Describe the forces acting on the object in the following examples a) pulling up a bucket filled…

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Q: A freight train has a mass of 310 x 10 kg. The locomotive exerts a constant horizontal force of 42…

A: 1. According to the Newton's second law of motion, the acceleration of the train is, F=maa=Fm=42×105…

Q: A 4.0 kg sphere and 8.0 kg sphere are both dropped from the same height at the same time. If the two…

A: If the objects are under free fall, the only force acting on the object is gravity . Ans also, in…

Q: If you were to drop a rock from a tall building, assuming that it had not yet hit the ground, and…

A: Vertical displacement after t=6 s

Q: Give an example of when your weight is more than mg. Give an example of when it’s zero.

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Q: Assume the boxer punching the punching bag is the action. According to Newton's 3rd Law, what is the…

A: According to Newton's 3rd Law every action has an equal and opposite reaction.The forces are of the…

Q: 16. An object in projectile motion have the following properties. (Neglect dissipative forces) * 1.…

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Q: Which team wins in a tug-of-war the team that pulls harder on the rope, or the team that pushes…

A: Pulling the rope harder or pushing the ground harder, both are same. Because they are…

Q: What causes the boat in Fig. 4–41 to move forward?(a) The force the man exerts on the paddle.(b) The…

A: To move forward, the boat must have acceleration in the forward direction. The boat gets…

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: 797 33 2m. 2 m 20 KN

A: Let the distance of 20 N force from A is  r =2 m The distance of between B and A is  R = 4 m Angle…

Q: You shoot an arrow with a bow. The following is Newton's second law applied for one of the instants…

A: When the arrow is flying up, the only force acting on the arrow is the force of gravity. This…

Q: The Top Thrill Dragster stratacoaster at Cedar Point Amusement Park in Ohio uses a hydraulic…

A: For the cart to move up vertically it should move against gravitational force.  Acceleration of the…

Q: Eric with a mass of 65 kg starts going down on an elevator. It starts accelerating downward from…

A: 1. Two force, tension and gravitational force 2. The weight of the system is W=msystemg=65…

Q: Which of the following is correct about acceleration due to gravity? [A] it increases with depth [B]…

A: Given that, The acceleration due to gravity.

Q: 10. Three masses at rest m1= 1.0kg, m2 = 2.0kg and m3 = 3.0kg are given equal and constant forces,…

A: Given, Three masses at rest are given an equal and constant force. The masses are: m1=1 kgm2=2…

Q: What is the amount of force required to accelerate a 20 kg object to 5 m/s²?

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Q: 1. force that q2 exerts to q3 * 90000N O 22500N O 10000 N O 2.0 x 10 * 4 N O 5.1 x 10 ^-5 N O ON

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Q: As you stand on a floor,does the floor exert an upward force against your feet? How much force does…

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Q: The acceleration of the cart will be higher if the angle of the track were bigger. How would that…

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Q: 65. Which of the following objects has the greatest inertia? * O A pingpong ball O One-peso coin O a…

A: The moment of inertia is dependent on two variables 1. The mass of the object 2. The distance from…

Q: Two masses,m1 and m2 , are connected to each other as shown. Mass m1 slides without friction on the…

A: Given quantities: Two masses : m1 and m2 acceleration due to gravity = g acceleration of the masses…

Q: A box of oranges with a weight of 87 N is being pushed across a horizontal floor. As it moves, it is…

A: Frictional force f  = u N

Q: 13. Which of the two forces form an "action-rwaction" pair that obeys Newton's third law? a. Fl and…

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Q: A person pushes a cart of mass 25 kg with a force of 50 Newtons to move it on a horizontal surface…

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Q: When you jump, remember to bend your knees as you land. Explain why this is important?

A: Impulse = change in momentum

Q: the weight of a man in a lift moving upwards is 608N, While the weight of same man in the lift…

A: Dear student When any object is placed in non inertial reference frame, there acts a pseudo force on…

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: A composite object consists of 28 identical particles all accelerating at 185 m/s2. Calculate the…

A: Given :   28 identical particles all accelerating at 185 m/s2 Each particle requires force 21…

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

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Q: A 90-kg man stands in an elevator that is moving up at a constant speed of 5.0 m/s. The force…

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Q: 7. A bowling ball and a feather are dropped from a height of 100 ft. The bowling ball weighs 12 Ibs…

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Q: 108. The following diagram represents a car stopped on a hill. A C BV Horizontal Which vector best…

A: Vector that represents the weight of the car can be understood byHere the vector A is the Friction

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: An 800 kg elevator is going down and accelerates at 2.0 m/s^2. Find the tension (Newton) in the…

A: Draw the free-body diagram of the system.

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!