A relative of yours belly flops, from a height of 2.50m (ouch!), and stops moving, after descending 0.500m underwater. Her mass is 62.5kg. What was the magnitude of her acceleration in the pool? Assume that it is constant. How long was she in the water before she stopped moving? What was the magnitude of the average net force exerted on her, after she hit the water, until she stopped?

Q: A book is pushed downward with a force of 10N. If the mass of the book is 2 kg the 30N 20N 10N ON

A: Given, Downward force=10 N mass of book =2 kg Let normal force is N newton

Q: A ball, with a mass of 5 kg, acceelerates in the +a direction with a magnitude of 5 m/s? and in the…

A: Given Data : The mass of the ball is given as Mb = 5 Kg. The acceleration of the ball in the…

Q: You create an elevator to get down a cliff.   Your and the bucket’s mass together is 80 kg (m2).…

A: The free-body diagram of the system is shown below. Here, T is the tension and a is the…

Q: A 6.7 kg block is lifted vertically by a force of 259 N. What is its acceleration? Assume g=9.81…

A:

Q: A 35.0‐kg dolphin decelerates from 12.0m/s to 7.50 m/s in 2.30 s to join another dolphin in play.…

A: Given data The mass of the dolphin is: m = 35 kg The initial speed of the dolphin is: u = 12 m/s The…

Q: You can measure acceleration by measuring the deflection of a vertically hanging mass. Suppose an…

A:

Q: A block A with M- 3kg is free to move along a horizontal frictionless surface and is connected, by a…

A:

Q: In the figure, blocks A and B have weights of 47 N and 22 N, respectively. (a) Determine the minimum…

A:

Q: An engineer claims to have a new kind of "safety" air-brake for elevators. If the cable should snap,…

A: Mass, m = 700 lb = 700×0.453 kg = 317.1 kgSpeed, v = 40 mph = 40×0.447 m/s = 17.88 m/sTime, t = 1/20…

Q: A prototype car  with a mass of 6.0 kg accelerates 4.0 m/s2 when an unknown force is applied to it.…

A:

Q: If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum…

A: GIVEN            coefficient of kinetic friction is 0.5            coefficient of static friction is…

Q: You look up the car on Kelly’s Blue Book and find the mass to be 1200 kg.   You go and push the car.…

A: Coefficient of static friction between dry concrete and rubber = 1 Coefficient of kinetic friction…

Q: What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her…

A: We have to determine the applied force by trampoline to gymnast.

Q: A force of 40.0 N is applied in the positive x-direction to a block of mass 7.65 kg, at rest on a…

A: From Newton’s second law of motion.

Q: A contestant in a winter sporting event pushes a 52.0 kg block of ice across a frozen lake as shown…

A:

Q: Imagine a landing craft approaching the surface of Callisto, one of Jupiter's moons. If the engine…

A: At an upward force of F1=3048 N, the ship descends at a constant velocity which means that the net…

Q: Suppose you have a 150 kg wooden crate resting on a wood floor, with coefficient of static friction…

A:

Q: were to search 10. A 79-kg person stands on a bathroom scale and rides in an ele- vator whose…

A: According to question we need to find acceleration for t  = 8 sec.

Q: A 90-kg skydiver jumps out of a plane above the earth. ⦁ As soon as he exits the plane, when there…

A: we know that if there is no other force acting on him, then the only force which acts is the…

Q: You have a person pulling to the left with force 115 N, and another person pulling to the right with…

A: Given data:  The two forces are acting on the box  F1 = -115 N F2 = +154 N Mass (m) = 2.3 kg…

Q: A force of 40.0 N is applied in the positive x-direction to a block of mass 8.25 kg, at rest on a…

A:

Q: At a given instant in time, a 12kg rock is observed to be falling with an acceleration of 6.25m/s2…

A: Part a the magnitude and direction of the net force on the rock.Part bthe magnitude and direction…

Q: A flea jumps by exerting a force of 1.17 x 10-5 N straight down on the ground. A breeze blowing on…

A:

Q: You are a 51.5 kg swimmer, swimming with an initial speed of 1.25 m/s.  You decide to coast until…

A: Mass, m = 51.5 kg Initial speed, u = 1.25 m/s Final speed, v = 0 Distance, d = 2.20 m

Q: A wedge with 45° angles is pushed horizontally along a table in the +x direction with a constant…

A: Step 1: Step 2: Step 3: Step 4:

Q: An 8.6 kg body undergoes an acceleration of 2.7 m/s2. What is the magnitude of the resultant force…

A: Given,

Q: A force of 2.10 N Is exerted on a 6.70 g rifle bullets. What is the bullets acceleration? (write…

A:

Q: A 35.0-kg dolphin decelerates from 12.0m/s to 7.50 m/s in 2.30 s to join another dolphin in play.…

A: If the dolphin decelerates from 12 m/s to 7.50 m/s with in 2.30 s, then its acceleration is,…

Q: During a hard stop a car and its passengers slow down with an acceleration of 80 m/s2 What magnitude…

A:

Q: A contestant in a winter sporting event pulls a 43 kg block of ice in the positive horizontal…

A:

Q: person pushes block A (mass 3 kg) with a constant force of 10 N. Both blocks accelerate together at…

A: Answer the following question is

Q: A fish (4 kg) is being yanked vertically upward out of the water and the fishing line breaks. If the…

A:

Q: A 68 kg lady stands on a bathroom scale on elevator. Starting from rest, the elevator accelerates…

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: