A 57 kg skier is going down a mountain side, during one particularly steep region their velocity can be described as a function of time as v(t)=(3.8+3.4t+0.8t2) m/s. What is the net force on the skier at a time of 3.2 seconds?

Q: A flea jumps by exerting a force of 1.32 x 10 N straight down on the ground. A breeze blowing on the…

A: force exerted by flea = 1.32 x 10-5 N  down wardbut according Newtons third lawforce acting on flea…

Q: A 4 kg particle moves along an x axis according to x(t) = −1 + 4t − 5t3 , with x in meters and t in…

A:

Q: A 2 kg particle moves along an x axis, being propelled by a variable force directed along that axis.…

A: The mass of the particle, m = 2 kg The position vector is x=2 m+ 3 m/st+ct2-4 m/s3t3

Q: A student weighs 200 N. If he is in an elevator that is accelerating upward at 2.00 m/s/s, what will…

A: Given that:-Weight of student=mg=200NUpward acceleration, a=2.00m/s2We know thatApparent weight of a…

Q: A time-dependent force,  = (7.40i - 3.80tj) N (where t is in seconds) is applied to a 2.00 kg object…

A:

Q: An electron is a subatomic particle (m = 9.11 x 10-31 kg) that is subject to electric forces. An…

A: First, we need to calculate the acceleration of the electron. We can use the equation of motion: v2…

Q: D 6.34 m/s Fose N frins 2. A 1000 kg object is rising. Its speed is increasing at 3 m/s². The force…

A:

Q: Moments after making the dreaded decision to jump out the door of the airplane, a skydiver's 86.4-kg…

A: Given data: Mass (m) = 86.4 kg Force due to air resistance (Fair) = 121 N Acceleration due to…

Q: a flat,horizo

A:

Q: An 940 kg dragster, starting from rest, attains a speed of 29.4 m/s in 0.4 seconds. What is the…

A: Concept

Q: A 5-kg object can move along the x axis. It is subjected to a force F in the positive x direction; a…

A: Given datam=5kgTo find-dv=?

Q: Because you wanted space, you woke up on unknown planet. While thinking you dropped a 150-g stone…

A:

Q: A 987.6 kg car initially moving at 10.74 m/s starts to slow down and comes to a complete stop in…

A:

Q: A 45.3 kg steel box is pushed along the concrete ground. It goes from zero to a speed of 23.3 m/s in…

A:

Q: A firefighter who weighs 124 lb slides down an infinitely long fire pole that exerts a frictional…

A:

Q: A toy rocket of mass 0.50kg starts from rest on the ground and is launched upward, experiencing a…

A: Given, A toy rocket of mass 0.50kg starts from rest on the ground and is launched upward,…

Q: A child of mass 22.0 kg runs and slides across the ice in a skating rink.  Initially she is moving…

A:

Q: A horizontal force of magnitude F = 57.5 N pushes on a block of mass m = 4.7 kg. The block is on a…

A: The given situation can be represented as

Q: A toy rocket of mass 0.50kg starts from rest on the ground and is launched upward, experiencing a…

A:

Q: A driver in a 1500-kg car driving at 10.0 m/s gently presses the brakes momentarily. The brakes…

A:

Q: Some rubber bands pulling on an object cause it to accelerate. If 5 rubber bands cause it to…

A:

Q: A cyclist is coasting at 18 m/s when she starts on a 450 m long slope that is 40 m high. The cyclist…

A:

Q: A powerful motorcycle can produce an acceleration of 3.50 m/s while traveling at 90.0 km/h. At that…

A:

Q: time t = 0 a 2250 kg rocket in outer space fires an engine that exerts an increasing rce on it in…

A: Given: Equation of force Fx=At2 At time t=1.45 s force is 781.25 N Mass of rocket is m=2250 kg Note:…

Q: You walk into an elevator, step onto a scale, and push the "down" button to go directly from the…

A: Given, Normal weight of the person W = 635 N initial acceleration of elevator a = 2.40 m/s2

Q: A flea jumps by exerting a force of 1.02 x 10 5N straight down on the ground. A breeze blowing on…

A: Data Given , Force straight down on the ground ( F1 ) = 1.02 × 10-5 N Force parallel to the ground (…

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: 7. Review. Three forces acting on an object are given by F, V (-2.00î + 2.00ĵ) N, and F, =(5.00î –…

A:

Q: Laila, who is a part of a critical patient's medical team was responsible for pushing a cart…

A:

Q: by conscientious ex nass m' on the planet.

A: Given: Acceleration is 12.3 m/s2 To find the mass of traveler on planet.

Q: omobile of mass 2500 kg moving at 50.0 m/s is braked suddenly with a constant braking force of 8500…

A:

Q: Choose the correct SI units of constant A. O s²/N ON/s O N/s² O S/N

A:

Q: A car uniformly accelerates from 0 to 29.0 m/s. A 80.0-kg passenger experiences a horizontal force…

A:

Q: net force of 20 N is acting on a falling object. The object experiences air resistance of 6.0 N. If…

A:

Q: The acceleration of a particle moving along the 7. x-axis is given by the function a, = -7 ť + 4 t*…

A:

Q: A model rocket is launched up with a thrust of 44.2 N. At one point in its upward flight, the air…

A:

Q: the normal force that you experience

A: Given: Initially elevator is at rest. Velocity of elevator in downward direction is vt=-2t2 j^ m/s…

Q: Jane, who has a mass of 81.0 kg, is riding at 15.0 m/s in his new car when she must suddenly slam on…

A: Mass m= 81 kg Initial speed = 15 m/s Final speed = 0 m/s Time = 0.5 s Acceleration = (final speed -…

Q: Problem 2: A runaway train has a mass of 1.5 × 104 kg and a speed of 5 m/s. How much time does it…

A:

Q: In the figure, the block of mass 2.00 kg accelerates down a frictionless inclined plane. The angle…

A: Given value--- mass = 2 kg. angle = 30 degree.  We have to find--- acceleration?

Q: acceleration of 7.2 m/s*2, when falling towards the earth. a) How high above the earth's surface is…

A: We know that Acceleration due to gravity at surface of earth = 9.8 m/s2   RRadius of earth = 6400…

Q: A 30 kg object at the origin and initially at rest experiences a force given by F = 3N /t î + 2N tĵ.…

A: Given Data: The mass of the object is: m=30 kg The force experienced is: F⇀=3Nri^+2Ntj^ The…

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: