A high diver of mass 64.3 kg steps off a board 10.0 m above the water and falls vertical to the water, starting from rest. If her downward motion is stopped 1.80 s after her feet first touch the water, what average upward force did the water exert on her?

Q: Two crates A and B are connected by a light rope along the horizontal surface. Mass of A is 4 kg and…

A:

Q: A 934-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it…

A: Write an expression for average force using Newton’s second law of motion

Q: In a particle accelerator, a proton has mass 1.67 x 10-27 kg and an initial speed of 2.00 × 105 m/s.…

A: We have to determine the magnitude of force exerted on Proton. Given that, Mass of proton…

Q: Fig. 2 F1 +y 55.0 - +x 54.0 N F2 2. Fig. 2 shows a 25.0-kg crate that is initially at rest. Note…

A: Given: Mass of crate: 25 kg kinetic friction: μk=0.350 Force F1 has two components in x and y…

Q: An 82 kg man drops from rest on a diving board 3.0 m above the surface of the water and comes to…

A: mass of man (m) = 82 kg initial speed of man (u) = 0 m/s Height of diving board above the surface of…

Q: Given two forces that act on an object of mass 3.0 kg: F1 with magnitude 24 N and direction 45…

A: Assume the east direction to be +x axis and the north direction to be +y axis. Then the components…

Q: A 4.5-kg object is dropped vertically (with zero horizontal speed) from a tall building with an…

A:

Q: If the only forces acting on a 2.0kg mass are F1=(3i-8j)N and F2=(5i+3j)N, what is the magnitude of…

A: The net force acting on the particle is given by, F→net=F1→+F2→=3i^-8j^N+5i^+3j^N=8i^-5j^N

Q: On a winter day a child of mass 20.0 kg slides on a horizontal sidewalk covered in ice. Initially…

A: According to work energy theorem the work done by friction on child to stop motion is equal to the…

Q: A 3 kg and a 5 kg box rest side-by-side on a smooth, level floor. A horizontal force of 32 N is…

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Q: In a flight between Ottawa and Toronto, an airplane follows the shown path from point A to point C.…

A:

Q: 40. A 92-kg baseball player slides into second base. The coelll- cient of kinetic friction between…

A: Solution: as given  m = 92 kg coef of friction = 0.61

Q: A 60 kg block slides along the top of a 100 kg block. The lighter block has an acceleration of 3.7…

A: Equilibrium condition in the horizontal direction for mass m1

Q: If the 1 kg standard body has an acceleration of 2.00 m/s2 at 20.0 to the positive direction of an…

A:

Q: A 344-kg boat is sailing 14.0° north of east at a speed of 2.40 m/s. 23.0 s later, it is sailing…

A: Given: A 344 kg boat is sailing 14.00 north of east at a speed of 2.40 m/s 23 seconds later, it is…

Q: A 80.0 kg diver falls from rest into a swimming pool from a height of 5.50 m. It takes 1.84 s for…

A: Mass of diver (M) = 80kg  Height of diver from pool = 5.50 m  Time taken by diver to stop inside…

Q: speed of the rocket at t=6.0s.

A: Given: Mass of rocket is m=0.50 kg Rocket's acceleration for 6 s is given as a=K-Lt2; here K=9 m/s2,…

Q: A high diver of mass 50.2 kg steps off a board 10.0 m above the water and falls vertical to the…

A: Consider the mass of the diver be m, its initial velocity be u, its final velocity be v, the…

Q: A freight train consists of two 8.00 x 104-kg engines and 45 cars with average masses of 5.00 x 104…

A:

Q: 3.09 kg mass is initially at rest while upon a frictionless, horizontal surface. An  applied force…

A:

Q: A 191-g particle is moving with a velocity v1 = i + j + 2k at a time ti = 1.2s. If the single force…

A: Concept used: Acceleration of a particle is rate of change of its velocity.

Q: Three forces acting on an object are given by  F1 = (−1.5î + 7.10ĵ) N,  F2 = (5.10î − 1.55ĵ) N, and…

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Q: A 3.45-kg object is moving in a plane, with its x and y coordinates given by x = 6t2 − 4 and y = 4t3…

A: The x-component of velocity is v=dxdt=ddt6t2-4=12t The y-component of velocity is…

Q: A dog and a sledge are on the frictionless ice of a frozen lake, 11.6 m apart but connected by a…

A: The acceleration of the sledge, as=0.8 m/s2   The acceleration of the dog, ad=0.2 m/s2   The rope…

Q: A 3.00-kg object is initially moving northward at 15.0 m/s. Then a force of 15.0 N, toward the east,…

A: Mass=3kg Velocity=15m/s Time=3.30s

Q: particle of mass m1 accelerates at 5.00 m/s2 when a force F is applied. A second particle of mass m2…

A:

Q: A dog and a sledge are on the frictionless ice of a frozen lake, 11.4 m apart but connected by a…

A:

Q: A 958-kg car starts from rest on a horizontal roadway and accelerates eastward for 5.00 s when it…

A:

Q: A dog and a sledge are on the frictionless ice of a frozen lake, 12.6 m apart but connected by a…

A:

Q: As a fish jumps vertically out of the water, assume thatonly two significant forces act on it: an…

A: a)Acceleration is given by

Q: What was the initial speed of the ball in m/s?

A: This is a projectile motion problem  Vertical distance = 2.71 m Horizontal distance = 14.7 m Angle…

Q: A car traveling at 27.2 m/s hits a bridge abutment. A passenger in the car, who has a mass of 65.0…

A:

Q: A 3.45-kg object is moving in a plane, with its x and y coordinates given by x = 3t2 - 3 and y = 2t3…

A:

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: