A boy sleds down a hill and onto a frictionless ice-covered lake at 11.7 m/s. In the middle of the lake is a 1,000 kg boulder. When the sled crashes into the boulder, he is propelled over the boulder and continues sliding over the ice at 11.7 m/s. If the boy's mass is 40.0 kg and the sled's mass is 20.0 kg, what are the speeds (in m/s) of the sled and the boulder after the elastic collision? (Due to the nature of this problem, do not use rounded intermediate values in your calculations—including answers submitted in WebAssign.)   sled m/s boulder m/s

Q: Melissa was putting on her makeup when she accidentally ran into a stopped car at a red light, 11.01…

A: Using kinematic equations and force relations to solve the problem

Q: An object with a mass of 1.95 kg is initially at rest upon a horizontal, frictionless surface. An…

A: Given data The mass of an object is m = 1.95 kg The initial speed of the object is u = 0 m/s The…

Q: A 2.8 kg ball strikes a wall with a velocity of 6.7 m/s to the left. The ball bounces off with a…

A:

Q: Superman must stop a 110-km/h train in 160 m to keep it from hitting a stalled car on the tracks.…

A:

Q: a small bullet leaves a gun, a net force is applied to shoot it through a barrel. If the bullet has…

A:

Q: A 1695 kg car accelerates from 4.0 m/s for 3.9 s and reaches a velocity of 18.0 m/s. Ignoring…

A: Given:mass, m = 1696 kgInitial velocity, u = 4 m/sFinal velocity, v = 18 m/sTime, t = 3.9 s

Q: object has a velocity (3.5 m/s)i + (-4.76 m/s)j + (4.68 m/s)k. In a time of 3.21 s its velocity…

A:

Q: When starting a foot race, a 68.6 kg sprinter exerts an average force of 704 N backward on the…

A: Given: The mass of sprinter (m) = 68.6 kg. Force exerted F = 704 N. Time (t) = 0.813 s.

Q: A box of mass 11.6 kg is slid along the floor. The initial speed of the box is 1.8 m/s and it comes…

A: According to question--- Given value--- mass m = 11.6 kg. initial speed = 1.8 m/sec . final speed =…

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: What is the magnitude of the net force needed to bring a 2085 kg car to rest from 25.6 m/s in 9.3…

A: Solution: Given that mass m= 2085 kg vinitial = 25.6 m/s time t = 9.3 s to find the force required

Q: Your mass is 77.3 kg, and the sled s mass is 18.9 kg. The sled is moving by itself on the ice at…

A: Given : m1 = 77.3 kg m2 = 18.9 kg v2 = 3.73 m/s

Q: Your mass is 86.8 kg, and the sled s mass is 17.2 kg. The sled is moving by itself on the ice at…

A:

Q: Mark swings a bucket filled with 2.5 kg of water over his head. The length of his arm is 0.52…

A:

Q: An object with a mass of 1.93 kg is initially at rest upon a horizontal, frictionless surface. An…

A: Given data: Mass of an object is, m= 1.93 kg The object is initially at rest, vi = 0 The applied…

Q: what speed  ?  will he be going after  35.0 m ?

A: force=1.10×103 Npushing force=805 Ndistance, x=35 mmass=90 kg

Q: 0 A cannon shoots a 5 kg cannonball out of its barrel with a speed of 65 m/s. If the cannonball…

A: Given Data:- First Problem:- Mass of the cannonball is m=5 kg Length of the barrel of the cannonball…

Q: A force F= (-2Nm)xi+(4Nm2)x2j-8Nk and a second force F=(-4Nm2)x2j-8Nk are applied to a 4 kg object…

A: A force F= (-2Nm)xi+(4Nm2)x2j-8Nk and a second force F=(-4Nm2)x2j-8Nk are applied to a 4 kg object…

Q: A 80.0 kg skater with the Birmingham Bulls hockey team with an initial speed of 7.8 m/s stops…

A:

Q: a heavy ball has a mass of 67.6 is hit. a boy hits this ball with a large stick, which gives it an…

A: Given:-  The mass of the ball is m = 67.6 kg. The initial velocity of the ball is v = 92.0 m/s.  The…

Q: A student pushes a physics textbook of mass 1.19 kg across a table with a horizontal force of 5.66…

A: The objective of this question is to find the speed of the textbook after a certain period of time.…

Q: Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. The scale reads 830 N for the…

A: Apply newton’s second law of motion along the motion of the lift, and substitute 95kg, for m,…

Q: A small block with mass 0.200 kg is released from rest at the top of a frictionless incline. The…

A: Given Data :m1 = 0.2 kgm1 = 0.4 kgdistance travelled by m1 in 0.2seconds is 0.508 metersinitial…

Q: is the final speed?

A:

Q: A clever coyote uses rocket powered skates to try to catch a roadrunner. The mass of the coyote is…

A: The mass of the coyote: m=38.1 kg Since the coyote starts at rest, it initial velocity is zero, u=0…

Q: A 60 kg object traveling at a speed of 80 m/s is suddenly brought to rest in a time of 0.4 seconds.…

A:

Q: PROBLEM 5.9 10. A 430 N force accelerates a cart from 10 m/s to 18 m/s in 5 s. What is the mass of…

A: Force acting on car (F)= 430N  Initial speed (u)= 10m/s  Final speed (v)= 18m/s  Time taken (t)= 5s…

Q: A 5 kg block is given an initial velocity of 10 m/s. If there is a friction force of 13 N opposing…

A: