A 35.0-kg dolphin decelerates from 12.0 to 7.50 m/s in 2.30 s to join another dolphin in play. What average force was exerted to slow the first dolphin if it was moving horizontally? (The gravitational force is balanced by the buoyant force of the water.)

Q: Two objects one having three times the mass of the other, are dropped from the same height in a…

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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: A block with mass of  m1=2 kg is placed on top of a block with a mass m2=4kg. A horizontal force…

A: Given  The mass of the first block is m1 = 2 kg. The mass of the second block is m2 = 4 kg. The…

Q: A 2230-kg airplane starts from rest and, with a constant acceleration of magnitude 5.60 m/s^2,…

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Q: What net external force is exerted on a 1500-kg artillery shell fired from a battleship if the shell…

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Q: acceleration for the skier

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Q: A 115-kg object is initially moving in a straight line with a speed of 50.0 m/s.  If it is brought…

A: Given data:  Mass (m) = 115 kg Initial velocity (v0) = 50.0 m/s Acceleration (a) = 1.50 m/s2…

Q: The acceleration produced when three forces act on a 0.060-kg object is a = 3.8302 + 3.1403 m/s². F₁…

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Q: A 0.2kg baseball is struck with a force of 100N from a baseball bat. What will be the acceleration…

A: Given,Mass of the baseball, m = 0.2 kgforce from a baseball, F = 100 N

Q: A block sets on a rough (ju), horizontal surtace. When the forces F,= 30 N and F2= 10 N are applied…

A: The coefficient of kinetic friction between the block and the surface is, μk=F2F1=1030=0.33

Q: 24. Which of the following Is true about constant positive acceleration? a. Velocity Is greater than…

A: As per our guidelines, we are supposed to answer only first one question in case of multiple…

Q: A boy on a skateboard is travelling north at 4.5 m/s when suddenly he is bumped in a direction 60°…

A: Given data Initial velocity , u=4.5 m/s Magnitude of acceleration is, a=0.5 m/s2 Angle ,θ=600 The…

Q: What is the magnitude of the final velocity of a 7.5 kg moving push cart maintained by an unbalanced…

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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: A car is accelerating with constant acceleration A. Block of mass m1 moving to the right as block of…

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Q: An elevator, with a total mass of 454 kg, accelerates downward at 3.51 m/s^2. During this time, the…

A: Given data:  Total mass (m) = 454 kg Acceleration (a) = 3.51 m/s2, downward Required: The tension in…

Q: The horizontal surface on which the objects slide is frictionless. The acceleration of gravity is…

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Q: 2) A Saturn V rocket has a mass of 2.70 x 10 kg and a thrust of 3.30 x 10' N. What is its initial…

A: Part (2): Given: The mass of the rocket is 2.7x106 kg. The thrust force on the rocket is 3.3x107 N.

Q: A woman driving a 2000 kg car at 15 m/s fully applies the brakes 50. m from a stoplight. If the car…

A: Given data: Mass (m) = 2000 kg Initial velocity (v0) = 15 m/s Final velocity (Vf) = 0 m/s Brakes…

Q: The purpose of an airbag is to increase the time it takes your body to come to a stop during an…

A: The purpose of an airbag is to provide the force over time which is also known as impulse.

Q: A 100-kg man stands in a moving elevator. Calculate the force exerted by him on the floor for the…

A: Solution: Given that m = 100 kg find teh force on floor  a). The elevator has a constant upward…

Q: 02. A is a mass 8 of kg and B is a mass of 6 kg, are on a flat surface. A string joins them…

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Q: A bowling weighs 71.2 N (16.0 lb). The bowler applies a horizontal force of 160 N (36.0 lb). What is…

A: The weight of the ball is given by, W=mg Here, m is the mass of the ball and g is the acceleration…

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: 16 A box at rest on a belt of rollers is given a push by a constant force over the distance shown in…

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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: F2–23. Determine the magnitude of the resultant force at A. F = 840 N 6 m Fc = 420 N 3 m 3 m 2 m

A: The position vectors of the three points A, B and C are A→=0 i^+0 j^+6 k^B→=3 i^-2 j^+0 k^C→=2 i^+3…

Q: A hot air balloon is descending at 10[m/s]. To slow the rate of descent the pilot drops a weight…

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Q: A car is moving on a flat road with a constant velocity of 40.0 m/s. The car has a mass of 1500. kg.…

A: Given: mass of the car = 1500 kg initial velocity (u)= 40 m/s final velocity (v) = 0 m/s…

Q: . What is the acceleration of the airplane? Answer in units of m/s 2.

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Q: A golf pro places a ball at rest on the tee, lines up his shot, draws back his club, and lets one…

A: Given:  a ball and the club

Q: 2. The only force acting on a 10-kg object has components Fx = 60 N and Fy = 80 N. Find the…

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Q: The mass of the coffee filter is 10.0 g. It is positioned 2.0 m from the ground and is released with…

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Q: m, m2 The blocks slide WITHOUT friction. The mass of block 1 is m1= 5.5 kg. Block 2 has a mass of…

A: Acceleration is define as change in velocity with respect to time So acceleration=20-0/1.4…

Q: How much force must be applied in order for a 1200 kg car to maintain a velocity of 4 m/s in a…

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Q: If a net horizontal force of 132 N is applied to a person with mass 60 kg who is resting on the edge…

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Q: A small cactus has fallen out of a plane. As it falls, it eventually reaches a constant velocity of…

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Q: A stone of mass 2 kg and weight 20 N falls through the air. The air resistance acting on the stone…

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Q: A 5-kg box is on a rough horizontal surface. An external force F is applied horizontally to the box.…

A: When F = 4 N force is applied than the box is moving with the constant speed that means the…

Q: A 60 kg block is pushed by a horizontal force causing the block to accelerate by 1 m/s2. The block…

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Q: An object is acted on by three simultaneous forces: F→1 = −3.00i ^ + 2.00j ^ N , F→2 = 6.00i ^ −…

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Q: The 10-kg block is subjected to the forces shown. In each case, determine its velocity at s = 8 m if…

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Q: A 0.10-kg ball slides on a frictionless wire along the x-axis. It is acted upon by a force Fx, which…

A: From the graph, the force at t=10s is 0.1N. The equation for the velocity of the ball can be…

Q: 60 kg block is pushed by a horizontal force causing the block to accelerate by 1 m/s2. The block has…

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Q: 2. A car of mass 1000 kg travelling along a straight path accelerates uniformly Trom 15 m s"| 40 25…

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Q: When all individual forces acting on an object are balanced, it is the natural tendency of an object…

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Q: Each of the seeds being blown off the head of a dandelion has a feathery structure called a pappus.…

A: If a body is moving a a constant speed, it means that the net force acting on the body is zero.…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: