A 50 N crate is pulled up a 5.0 m inclined plane by a worker at constant velocity. If the plane is incline at an angle of 37 o to the horizontal and there exists a frictional force of 10 N between the crate and the surface, what is the force applied by the worker?     0 N     20 N     30 N     40 N   a) A girl and a boy pull in opposite directions on strings attached to each end of a spring balance. Each child exerts a force of 20 N. What will the reading on the spring balance be?     0 N     10 N     20 N     40 N b) A horizontal force of 25 N is exerted on a box with a mass of 10 kg. The box accelerates at 2.0 m/s 2. What is the magnitude of the frictional force acting between the box and the floor?     0.0 N     2.5 N     5.0 N     10 N

Q: The parachute on a race car of weight 8,815 N opens at the end of a quarter-mile run when the car is…

A: Given: The weight of the parachute is 8815 N. The initial speed is 33 m/s. The final speed is 0 m/s…

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: A constant horizontal force moves a 50 kg trunk 9.4 m up a 28° Incline at constant speed. The…

A:

Q: A 50kg wooden crate is being pushed up a ramp with a force of 100N (parallel to the ramp) and is…

A: Given:-  The mass of the wooden creat is m = 50 kg  The force applied on the crate up the ramp  is F…

Q: The small cart of mass m is nudged with negligible velocity from its horizontal position at A onto…

A: Draw the free-body diagram of the system.

Q: Question 2. A skier starts at rest at the top of a large hemispherical hill (Figure 3). Neglecting…

A: Given:The skier starts at rest at the top of a large hemispherical hill.We need to show that, the…

Q: Tarzan, who weighs 688 N, swings from a cliff at the end of a vine 18 m long. From the top of the…

A: a. the vine does not break. b. the speed of the Tarzan at the bottom of the swing can be calculated…

Q: A 250g PASCar drags a sliding tray of 50g on the track. The kinetic friction coefficient between the…

A:

Q: A woman exerts a horizontal force of 6 pounds on a box as she pushes it up a ramp that is 5 feet…

A:

Q: A 1,400-N crate is being pushed across a level floor at a constant speed by a force F of 200 N at an…

A:

Q: 1. Starting from rest, a 20-kg block slides down from the top of a frictionless inclined plane of…

A:

Q: ŁOne non-powered sled is sliding over a snowed surface, first down from the top of Rat and inclined…

A: Given: The inclination of the plane surface with horizontal is 45 degrees The top of the inclined…

Q: An object with a mass of 4kg lies on a rough plane inclined at 20 degrees to horizontal. A force of…

A: mass =4 kg  angle = 20oF = 35 N a = 2.5 m/s2

Q: Truck suspensions often have “helper springs” that engage athigh loads. One such arrangement is a…

A: Step 1 Leaf spring constant,Helper spring constant

Q: A 1,200-N crate is being pushed across a level floor at a constant speed by a force F of 260 N at an…

A:

Q: ox with mass of 75.0 kg slides down on an incline plane with an angle of 15° and at bottom of…

A:

Q: The world record for pole vaulting is 6.15 m. If the pole vaulter’s gravitational potential is 4942…

A: Given Potential energy= 4942 J Height = 6.15 m We have to calculate the mass

Q: A car is moving at 50 mph initially on the road, then the engine suddenly shut down and the car…

A: Given Data:- Initial speed of the car is  v0=50 mph =50×1 mi1 h×1609 m1 mi×1 h60 min×1 min60 s…

Q: A 3500lb car decelerates from 60mph to 45mph in 8 seconds. Neglecting friction, what is the average…

A:

Q: A warehouse worker exerts a constant horizontal force of magnitude 100N on a 45.0 kg box that is…

A: The initial speed of the box, u=0 m/s The final speed of the box ,v=1.21 m/s The distance moved by…

Q: A desperate hiker has to think fast to help his friend who has fallen below him. Quickly, he ties a…

A:

Q: How fast will the wagon accelerate

A: Here we use Newtonian equation of motion.

Q: A 1,801-kg car starts from rest at the top of a driveway 6.14 m long that is sloped at an angle of…

A:

Q: 17. A few weeks ago in lab you were releasing gliders down a tilted frictionless air track. Assume…

A: Given Data Angle of the track with the horizontal is θ=18°. The glider passes through the gate after…

Q: 12kg box is released from the top of the incline that is 5m long and makes an angle of 40 degrees to…

A:

Q: Does the escape speed for an object at the earth’s surface depend on the direction in which it is…

A: The angle of launch of the spacecraft does not effect the escape velocity of the object. Whatever…

Q: Ornithologists have determined that some species of birds tend to avoid flights over large bodies of…

A: Before we solve question  let's get our total energy equation. In anticipation of part B,we will…

Q: You are designing a skatepark and have designed a ramp to be 4.7 meters high. You want to market…

A:

Q: A person with mass m is skateboarding across level ground on earth with a speed vo when they come to…

A: mass = m height = h distance along the slope = d magnitude of frictional force = Ffinitial speed =…

Q: Planetary motion. A planet or asteroid orbits the Sun in an elliptical path'. The diagram shows two…

A: Introduction: The law of conservation of angular momentum states that when no external torque acts…

Q: After a long day of playing and catching bugs outside, a mama cat drags her basket of sleepy kittens…

A: The work done can be calculated by the work-energy theorem: W=PE+KE+ElostPE-potential…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!