A skier approaches the base of an icy hill with a speed of 12.5 m/s. The hill sloes upward at 24° above the horizontal. Ignoring all friction forces, find the acceleration of this skier (a) when she is going up the hill (b) when she has reached her highest point (c) after she has started sliding down the hill.

Q: (a) Calculate the acceleration of a skier heading down a 10.0º slope, assuming the coefficient of…

A: The coefficient of friction for waxed wood on wet snow,

Q: A skier has an initial velocity of 13.0 m/s and skiis up a hill with an angle of 20◦. The skier…

A: Given: The initial velocity of skier is v=13 ms. The angle is ϕ=20°. The skier slides for the…

Q: A 1.5-kg fireworks shell is fired at an angle of 19∘19∘ from the vertical from a mortar and reaches…

A:

Q: You ski straight down a 42.0 degrees slope, starting from rest and traveling a distance of 10.3 m…

A: Explanation:- First of all we will calculate acceleration down the slope. Then by using the…

Q: Tim pushes a 195kg lawnmower with a force of 850N at an angle of 35 degrees with respect to the…

A:

Q: A motorist is moving at 70 km/ h along a damp road when a child steps out 50 m in f ront. It takes…

A: Initial velocity (u) = 70 kmhr distance of child in front of motorist = 50 m time taken to apply the…

Q: Batman is driving his 1900 kg Batmobile down the hill from the Bat Cave. The hill is inclined at an…

A: By fbd of block  MgSin20° + F - ukMgCos20° = Ma  F = M(a + ukgCos20° - gSin20°)  F = 1900 ( 5 +…

Q: A computer hard drive is accidentally dropped on the ground. When it hits the ground, it comes to a…

A:

Q: A frictionless plane is 10.0 m long and Inclined at 28.0°. A sled starts at the bottom with an…

A: The acceleration of the sled is, a=mgsinθm=gsinθ=9.8 m/s2sin28°=4.60 m/s2 (a) The time taken by the…

Q: What will be the velocity of the ski jumper at position B if she starts from rest at position A?…

A:

Q: A skier starts at rest atop a ski slope that has a slope of exactly 36.0∘. Her total mass is 71.0…

A: v=u+at=u+gsinθt

Q: V Three youths push a 40.0-kg block of ice so that it begins to coast on a frozen lake. With an…

A: mass of block of ice (m) = 40 kg Initial speed (u) = 3 ms

Q: ckey puck slides down a frictionless ramp with an acceleration of 5.00 m/s2. What angle does the…

A: We know that We have given that The hockey puck slides down a frictionless ramp with an acceleration…

Q: A baseball player with a mass of 72kg slides into third base.  The force of kinetic friction between…

A: Write the given values with the suitable variables. m=72 kgf=582 Nv=0 m/st=0.72 s Here, m is the…

Q: A parachutist whose mass is 85 kg drops from a helicopter hovering 2000 m above the ground and falls…

A: The objective of the question is to find out the total time taken by the parachutist to reach the…

Q: If a ball is given a push so that it has an initial velocity of 5 m/s down a certain inclined plane,…

A: Given data:  Initial velocity (v0) = 5 m/s Distance as function of time s = 5t + 2t2 Required: The…

Q: A car is travelling at 50.0 km/h on a flat highway. (a) If the coefficient of frictin between road…

A: Given :  vo = 50.0 km/h = 50.0(1000/3600) = 13.9 m/s v = 0 m/s (because finally the car stops)

Q: A baseball is thrown vertically upward with an initial velocity of 9 m/s. Neglecting air friction,…

A: At the maximum height, the velocity is zero,

Q: A tired cyclist on a bicycle (102.0 kg combined) starts with an initial velocity of 15.0 m/s at the…

A:

Q: The diagram illustrates a chute in a factory used for sliding boxes to a lower floor. The boxes…

A: velocity of box at point B = 0.8 + 0.01 ms= 0.81 msCoefficient of friction (μ) = 0.20

Q: A 10.0 kg block initially at rest is pulled to the right along a horizontal, frictionless surface by…

A: we know that acceleration, a=F/m and v^2=2as  [initially at rest]

Q: A crate of mass m falls off a truck and initially travels at a speed vo​after it hits the ground.…

A:

Q: arrance in A parachutist whose mass is 75 kg drops from a helicopter hovering 1000 m above the…

A: When a body is falling, it is acted upon by two forces which are gravitational force and air drag.…

Q: Neglecting friction and air resistance, a car with an initial velocity of 76.5 km/h coasts up a hill…

A: given             initial velocity of car =vi= 76.5 km/h  = 21.25 m/s             final velocity of…

Q: A traveler pulls on a 25 kg suitcase strap at an angle 36° above the horizontal. If the suitcase…

A: Given data:  Mass (m) = 25 kg Angle (θ) = 36° , above the horizontal  Initial velocity (u) = 0 m/s…

Q: In Tokyo Olympic 2020, diver from China, Shi Tingmao performed and outstanding performance with…

A: Initial upwards velocity (u) = 4 ms

Q: A skater with an initial speed of 6.80 m/s stops propelling himself and begins to coast across the…

A: initial velocity (u) = 6.80 m/sFinal velocity (v) = 0 m/s Coefficient of kinetic friction (μk) =…

Q: You are driving a car at a constant speed of 14.0 m/s along a straight level road. As you approach…

A: The initial velocity of the car is u = 14 m/s. The final velocity of the car is v = 0 m/s. The…

Q: A slanted roof rises at 35° above the horizontal, and the straight-line distance from the top of the…

A:

Q: m = 5 kg 40° 3m 3m (т hị Va = 2.0 m/s hy= 0 m Theoretical: Use the energy method to find v3.…

A: Values given in the question are as follow; θ=40ova=2 mshi=0.702 mhf=0l=3 mm=5 kg According to…

Q: A body is thrown upward with an initial speed of 50ft/s. Find the time required for the body to…

A: Given data- Initial speed u=50 ft/s, upward  The time required for the body to attain a speed of 20…

Q: An object moves with an initial speed of 5.01 m/s. It then enters a region with friction causing the…

A: Work done by the constant friction force is:Wfric = Ffricd = μFNdbut FN = mgTherefore, Wfric =…

Q: An Olympic skier moving at 26 m/s down a 280 slope encounters a region of wet snow of coefficient of…

A:

Q: Sam, whose mass is 74.0 kg, takes off across level snow on his jet-powered skis. The skis have a…

A: Given:- The mass of the sam is m =74.0 kg  The skis have a thrust force of Fth = 220.0 N  The…

Q: The acceleration due to gravity on Earth differs slightly from place to place, depending on…

A: Consider the graph between the velocity and the time. Since the metal ball is dropped from the rest,…

Q: the patio. He neglects to bend his knees on landing, taking 2.4 cm to stop. (a) What is his average…

A:

Q: A roller coaster car starts from rest at the top of a track 30.0 m long and inclined at 20.0° to the…

A:

Q: A man steps outside one winter day to go to work. His icy driveway is 8.0 m long from top to…

A:

Q: a car of mass 2.0*10^3 kg is initialy moving at 21 m/s when the brakes are applied and the car is…

A:

Q: A block (mass = 5.56 kg) is released from rest at the top of a frictionless ramp. 1.01 seconds after…

A:

Q: If we take air friction into account, argue that 1/2 (mv^2) + mgy must decrease as a function of…

A: When we take air friction into account, the energy of system is also dissipated as heat.  Since air…