4. A 90 kg man stands in an elevator that has a downward acceleration of 1.4 m/s?. The force exerted by him on the floor is about: A Zero в 90 N 880 N D 760 N 5. A student pushes a loaded sled whose mass m is 100 kg for a distance d of 5 m over a frictionless surface. He exerts a constant horizontal force F of 100 N. If the sled starts from rest, what is its acceleration? 20 m/s? 1 m/s? 100 m/s 5 m/s? A B D 6. A crate whose mass m is 250 kg rests on the bed of a truck that is moving at a speed v, of 100 m/s. The driver applies the brakes and slows to a speed v of 50 m/s in 10 s. What is the acceleration ? +5 m/s? 50 m/s? -5 m/s? 100 m/s? A B D

Q: 2. What is the acceleration along the ground of a 10 kg wagon when it is pulled with a force of 44 N…

A: Given data:  Mass (m) = 10 kg Force (F) = 44 N Angle (θ) = 35° above the horizontal Required: The…

Q: P 25.0° A 55.0 kg block is pulled along a frictionless surface with a force P, exerted at an angle…

A: (a) In order to lift the block the force should be applied against the force of gravity, hence the…

Q: Suppose you move a 15-kg crate by pulling upward on the chain at an angle of 45 degrees above the…

A:

Q: A block with mass mp = 6.75 kg is suspended on a string. You pull upwards on the string creating a…

A: Given value--- mass = 6.75 kg. tension = 70.9175 N. initial speed = 3.25 m/s. time = 2.5 second .…

Q: three suitcases are connected by a massless rope and pulled upward with a constant speed of 3.00 m/s…

A:

Q: Three forces acting on an object are given by  F1 = (−1.6î + 6.55ĵ) N, F2 = (4.75î − 1.2ĵ) N, and…

A: Given : F1 = (−1.6î + 6.55ĵ) N F2 = (4.75î − 1.2ĵ) N F3 = (−44.5î) N Acceleration (a) = 3.90 m/s2

Q: You want to hang an object from the ceiling of an elevator that has a maximum acceleration of 4.0…

A: Given: a=4 m/s2T = 45 Ng = 9.8 m/s2m=?

Q: How much force must be applied in order for a 1200 kg car to maintain a velocity of 4 m/s in a…

A:

Q: Two forces act on a 55 kg object. One force has magnitude 65 N directed 59° clockwise from the…

A:

Q: A cart ( m=1848 g) is moving horizontally due to a horizontal tension force applied by a string. If…

A: Given that Mass of the cart m = 1848 g = 1.848 kg Acceleration a = 6.2 m/s2

Q: The figure below is for a 6 kg box on a horizontal floor. Initially, you are pushing horizontally on…

A:

Q: N7. An elevator of mass 890 kg has an upward force of 1.10 x 10N applied to it. Determine the…

A: 7 -- Given: Mass of elevator, m=890 kg Upward force , F=1.10×104 N     To determine: (a) net force…

Q: A 60-kg operator is standing on a spring scale in a 600-kg elevator that is accelerating 6m/s2…

A: Given: The mass of the operator is 60 kg. The mass of the elevator is 600 kg. The acceleration of…

Q: A cart of weight 15.0 N is accelerated across a level surface at 0.15 m/s 2. What net force acts on…

A:

Q: What is the magnitude of the final velocity of a 7.5 kg moving push cart maintained by an unbalanced…

A:

Q: s shown below, if F = 77.0 N and M = 2.00 kg, what is the magnitude of the acceleration (in m/s?) of…

A:

Q: a 10 kg body is suspended vertically by a cord. the tension on the cord is A. 5N B. 10 N C. 98 N D.…

A:

Q: Find the acceleration of a 4.0 kg box sliding across a level floor if it is being pulled forward by…

A: the net force on the box in the horizontal direction is Fnet,x=Tcosθ-f=20 Ncos60°-4 N=6 N

Q: 2. A farmer is lifting some moderately heavy rocks from a field to plant crops. He lifts a stone…

A: Given data : The Force applied by the stone downward is given as Fw = 180N. The acceleration of the…

Q: (14 pt) The figure shows the velocity graph of a 60. kg passenger in an elevator. (a) Assuming a…

A:

Q: Three forces acting on an object are given by F, = (-2.15î + 6.80j) N, F, = (4.80î – 2.5j) N, and F,…

A:

Q: 3) A crate is sliding down an incline that is 35° above the horizontal. If the coefficient of…

A: Given data: Angle (θ) = 35°, above the horizontal Coefficient of kinetic friction (μk) = 0.40…

Q: 9. A block is pushed across a horizontal surface by the force shown. If the coefficient of kinetic…

A: Let W be the weight of the block. Let Force F be resolved into horizontal and vertical components as…

Q: also for this question we need to use newtons laws ive seen waysthis wuestion was being solved and…

A:

Q: 17. A skydiver of mass 80.0 kg jumps from a stationary helicopter and reaches a terminal speed of…

A: Given data: Mass of skydiver is, m=80.0 kg. Terminal speed is, v=50.0 m/s.

Q: An apple crate with a weight of 225 N accelerates along a frictionless surface as the crate is…

A: Let, the mass of the apple crate is M. So the weight of the apple crate is, W = Mg g = 9.81 m/s2

Q: A 2.2 kg crate is being dragged across the floor by a horizontal force of 34 N. If it accelerates at…

A: Mass of crate, m=2.2 kg Applied force, Fa=34 N Acceleration, a=1.55 Let f be the force of friction.…

Q: 10. How much horizontal force is needed to produce an acceleration of 8 m/sec² on a 75 kg box? A.…

A:

Q: An apple crate with a weight of 225 N accelerates along a frictionless surface as the crate is…

A:

Q: A net force of 3,000.0 N accelerates a car from rest to 37.4 km/h in 5.00 s. (a) What is the mass of…

A:

Q: hover puck has a mass of 1375 g, photogate 1 is at the 20 cm mark, photogate 2 is at the 70 cm mark,…

A:

Q: Three forces acting on an object are given by  F1 = (−1.5î + 7.10ĵ) N,  F2 = (5.10î − 1.55ĵ) N, and…

A:

Q: 6. A block is pushed up a frictionless 30° incline by an applied force as shown in the figure. If F=…

A: Given- Magnitude of applied force ,F =25 N Mass of block , M = 3 kg  Angle of inclination of…

Q: 9. A block is pushed across a horizontal surface by the force shown. If the coefficient of kinetic…

A: The net force in the horizontal direction of block is Fnet=Fcosθ-f=Fcosθ-μkMg=20 Ncos30°-0.33 kg9.…

Q: 9. Three identical blocks of masses m =2 kg are drawn by a force F = 10.2 N with an acceleration of…

A:

Q: 7. A man weighs a fish with a spring scale attached to the ceiling of an elevator. While the…

A: "Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: If a net horizontal force of 132 N is applied to a person with mass 60 kg who is resting on the edge…

A:

Q: Three forces acting on an object are given by F1 = (−1.5î + 7.45ĵ) N, F2 = (5.25î − 1.1ĵ) N, and F3…

A: Given: Force F1 = (−1.5î+7.45ĵ) N Force F2 = (5.25î − 1.1ĵ) N Force F3 = (−42î) N Magnitude of…

Q: Three forces acting on an object are given by  F1 = (−1.8î + 6.20ĵ) N,   F2 = (5.10î − 2.2ĵ) N,  and…

A: Given:Three forces acting on an object are given by F1 = (−1.8î + 6.20ĵ) N,F2 = (5.10î − 2.2ĵ) NF3 =…

Q: Three forces acting on an object are given by F, = (-2.1î + 6.85j) N, F2 = (4.50î – 2.15j) N, and F3…

A:

Q: 7. The tension in a string from which a 4.0-kg object is suspended in an elevator is equal to 44 N.…

A: Given data: Mass of the object m =0.4 kg Tension of the string T=44N

Q: A 2.5 x 103 kg car is travelling due west at 3.0 x 101 m/s when the brakes are applied, exerting a…

A: Givenm = 2.5 × 103kg v =3.0 × 101 m/s WestF = 5.0 ×103 N East

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?”