A model rocket is fired vertically from rest.        It has a constant acceleration of 19.8 m/s2 for the first 1.50 s. Then its fuel is exhausted, and it is in free fall. The rocket has a mass of 82.1 g; the mass of the fuel is much less than 82.1 g. Ignore air resistance. What is the upward force exerted on the rocket by the burning fuel?     N

Q: A fisherman yanks a fish vertically out of the water with an acceleration of 2.6 m/s² using very…

A:

Q: d A block of mass 3.25 kg slides down a ramp that is angled 0 = 35 degrees above the horizontal. The…

A: Given that: Mass of block, m=3.25 kgAngle of inclination, θ=35°Kinetic friction coefficient,…

Q: Which statement BEST describes the motion of an object that is being subjected to two forces of…

A:

Q: W An object with mass m1 = 5.00 kg rests on a frictionless horizontal table and is connected to a…

A: Given: m1 = 5 kg  m2 = 10 kg

Q: A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the…

A: Given,

Q: You are designing a high-speed elevator for a new skyscraper. The elevator will have a mass limit of…

A: (a) maximum upward force is exerted when the elevator is ascending Tmax-mg=maTmax=mg+a=2400 kg9.80…

Q: A 3.35-kg object is moving in a plane, with its x and y coordinates given by x = 6t2 - 2 and y = 4t…

A: Mass= M = 3.35 Kg r is the position vector   r= (6t2-2)i + ( 4t3 + 1 )j   F=Ma   v=dr/dt =  (12t )i…

Q: An object of mass 0.61 kg is initially at rest. When a force acts on it for 2.9 ms it acquires a…

A: Given data:  Mass (m) = 0.61 kg Initial velocity (u) = 0 m/s Time interval (Δt) = 2.9 ms = 2.9×10-3…

Q: A car of mass 1,230 kg is lowered onto a junk pile at the end of the cable of a large crane. If the…

A:

Q: A bag of sugar weighs 3.50 lb on Earth. What would it weigh in newtons on the Moon, where the…

A:

Q: A 1000 kg car and a 2000 kg truck are both driving at the same speed. The both have tires with the…

A: Force acting on a moving body in case of friction is present is given as, F=ma-f=ma-μmg=maa=-μg

Q: n 8 of 8 19.3 lb object has the acceleration components (0.) (0). (a63) 0.35 +( 0.65 s2 11.7 s2 0.63…

A: At t=3.67sec

Q: A rifle shoots a 4.30 g bullet out of its barrel. The bullet has a muzzle velocity of 985 m/s just…

A:

Q: A football punter accelerates a football from rest to a speed of 11 m/s during the time in which his…

A: Impulse imparted to the ball is equal to the change in momentum. Force exerted by the punter to…

Q: A motorcycle and rider have a total mass equal to 345 kg. The rider applies the brakes, causing the…

A: From Newton's 2nd law, F = Ma Where , M = total mass of the object a = acceleration

Q: Three boxes, each of mass 18 kg are on a frictionless table, connected by massless strings. A force…

A: Given data: The mass of each box is m=18 kg. The horizontal acceleration is a=0.7 m/s2. Part (1)…

Q: You’ve always wondered about the acceleration of the elevators in the 101-story-tall Empire State…

A: A weighing scale measures the force acting on it due to the weight (W) of the person standing on it.…

Q: Two blocks, M = 12.0O kg and m = 5.54 kg, are connected via a massless rope. They are being pushed…

A: For mass M, F-T-Mgsinθ=Ma For mass m, T-mgsinθ=ma

Q: A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a…

A: Given data, Mass of the player m=90 kg Force exerted F=800 N Acceleration a=1.7 m/s2

Q: e. A  jewelry  box  is  placed on  the dashboard  of  a  car and  slides forward  when  the  car…

A:

Q: A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W =…

A: Given Data: Initial speed of elevator is zero. Reading of scale when elevator is at rest W=895 N…

Q: A physics major is cooking breakfast when he notices that the frictional force between the steel…

A:

Q: A bullet is accelerated down the barrel of a gun by hot gases produced in the combustion of gun…

A:

Q: A truck on a flat road accelerates from rest at a constant rate and covers a distance of 100 m in 6…

A: The mass of the truck, m=1000 kg   The distance covered by the truck, s=100 m   Time is taken to…

Q: What net external force (in N) is exerted on a 1050-kg artillery shell fired from a battleship if…

A: The given values in the problem are:Mass of the artillery shell (m) = 1050 kgAcceleration of the…

Q: T3 C A Three boxes, each of mass 22 kg are on a frictionless table, connected by massless strings. A…

A:

Q: A 4.8-kg bucket of water is raised from a well by a rope. If the upward acceleration of the bucket…

A: F=ma+g

Q: An object of mass 0.53 kg is initially at rest. When a force acts on it for 2.9 ms it acquires a…

A:

Q: Block 1 (3.5 kg) is on the surface of a frictionless inclined plane that makes an angle of 25…

A: Mass, m = 3.5 kg Angle, θ=25 °

Q: Suppose a 1000 kg car hits a 10 kg shopping cart head-on. The shopping cart feels an average force…

A:

Q: A student's backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an…

A:

Q: A black widow spider hangs motionless from a web that extends vertically from the ceiling above. If…

A: Given The mass of spider is m = 1.70 g = 1.70 x 10-3 kg. When the spider is hanging at the ceiling…

Q: What is the Force F in Newtons required to hold the object of 2.3 kg at rest? (Assume the rope and…

A:

Q: A football punter accelerates a football from rest to a speed of 15 m/s during the time in which his…

A: the average force is, Fav=mv-ut

Q: A horizontal force of 195N is required to push a crate across a floor at a constant speed. What is…

A: Magnitude of horizontal force is F = 195 N

Q: On its takeoff roll, the airplane starts from rest and accelerates according to a = ao - kv² where…

A: On its takeoff roll, the airplane starts from rest and accelerates according to- a=a0 - kv2…

Q: A jet with mass m = 1.3 x 10° kg jet accelerates down the runway for takeoff at 2.4 m/s“. 1) What is…

A: Recall Fnet=m(Vf-Vi)/t Also if speed is constant the acceleration =0 so force is also zero in this…

Q: An object of mass 0.61 kg is initially at rest. When a force acts on it for 2.9 ms it acquires a…

A: Given data:  Mass (m) = 0.61 kg Initial velocity (u) = 0 m/s Time (t) = 2.9 ms = 2.9×10-3 s Final…

Q: rt A That is the passenger's weight before the elevator starts moving? xpress your answer with the…

A: Givent=5 s (time of motion)u=0 (initial speed of elevator)v=12 m/s (final speed of elevator)m=65 Kg…

Q: Ⓒ Macmillan Learning Two skydivers are holding on to each other while falling straight down at a…

A:

Q: A bag of sugar weighs 3.00 lb on Earth. What would it weigh in newtons on the Moon, where the…

A: Wmoon=WEarth6=3.00 lb6=0.5 lb4.45 N1 lb=2.23 N

Q: M Suppose a block of mass m = 36.5 kg is hanging off the edge of a desk from a string. The string is…

A: Given: The mass of the block is 36.5 kg. The spring constant is 194 N/m. The acceleration of the…

Q: A 4.0-g bullet leaves the muzzle of a rifle with a speed of 340 m/s. What force (assumed constant)…

A: Force acting on bullet is as follows; F=ma…

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”