While an elevator of mass 2400 kg moves upward, the tension in the cable is 39.8 kN. Assume the elevator is supported by a single cable. Forces exerted by the guide rails and air resistance are negligible. a.) What is the acceleration of the elevator? If the acceleration is in upward direction, enter a positive value and if the acceleration is in downward direction, enter a negative value. b.)If at some point in the motion the velocity of the elevator is 1.20 m/s upward, what is the upward velocity of the elevator 4.00 s later?

Q: 60.0 kg skier is moving down a snowy hill inclined at 5 degrees above the horizontal with an…

A: mass of skier (m) = 60 kg initial angle of inclined hill (θi) = 5oinitial acceleration = 0.4 ms2

Q: g) Q: Which object is accelerating faster? A or B? B A h) Q: Which object is slowing down? A, B, or…

A: The acceleration of the particle is given by Where v = velocity of the particle

Q: A lawn mower is pushed at a constant velocity of 0.76m/s. The person pushes horizontally forwards…

A: Given, v=0.76 m/sF=80 N

Q: A skydiver jumps out of a helicopter and falls freely for 3.8 s before opening the parachute.  a.)…

A: Given: time of free fall before opening the parachute, t = 3.8 s

Q: A pulley and string arrangement is used to connect two objects A and B as shown in the diagram…

A:

Q: 14. A box is initially sliding across a level floor at 10 m/s before being subjected to the forces…

A: The forces are being acted on the box at an instant. From the given diagram the forces in horizontal…

Q: Which of the following statements is true of a ball that is thrown upward, reaches its highest…

A: According to the question we need to find true and false condition for the given parts.

Q: While at soccer practice, Abbey runs down the field at 10 meters per second. She has a constant…

A:

Q: The diagram below shows the initial velocity of an object. The magnitude of the initial velocity is…

A:

Q: Jane took 10 minutes to drive her boat upstream to water-ski at her favorite spot. Coming back later…

A:

Q: Answer part B). What acceleration should the red object have if it is to collide with the blue…

A: Using equation of motion and considering the final velocity of the Red object to be zero.

Q: Cynthia competes in life competitions.  She rides solo on a small sled 3 inches off the ground down…

A: Given data The acceleration is a=6.84 m/s2 The time is t=2.39 s The initial speed is, u= 0 m/s The…

Q: A van, carrying a box of mass 200 kg on its loading area, accelerates from rest to a speed of 30…

A: Mass of box= 200 kgInitial velocity, u=0Final velocity, v= 30= 8.33 Distance = 30.0 mDisplacement of…

Q: The cart in the figure is attached to special spring that can stretch and compress equally well. The…

A: Solution:   As per the given figure,

Q: A toboggan approaches a snowy hill moving at 12.1 m/s. The coefficients of static and kinetic…

A: Given data:The initial velocity of toboggan Coefficient of static friction Coefficient of kinetic…

Q: If you toss a ball upward with an initial speed v = 2m/s, it reaches a max height h without air…

A: Given data:  Original initial velocity (v) = 2 m/s, vertically upward  Maximum height = h New…

Q: boulder is pushed off a 300 m cliff with a horizontal speed of 10 m/s. a) What is the time it will…

A:

Q: A rocket is launched upward. The height of the rocket was 68 ft at the end of the thrust portion of…

A:

Q: The following situations illustrate acceleration, EXCEPT_______. a. A car travels at constant speed…

A: Acceleration is the rate of change of velocity, When ever there is change in magnitude, direction of…

Q: For this part, answer 013 and A cat wants to sit on the top of a refrigerator of 1.0 m height. The…

A:

Q: A ball is thrown straight up at a time t=0 with an initial speed of 15 m/s. Take the point if…

A: "As per guidelines, we will solve one question with first three (3) subparts of the question  for…

Q: 1. A toy rocket rises from the ground with a constant upward acceleration of 5 m/s2 for 6 seconds…

A:

Q: Albert runs 34 m to the right in 10 s. Isaac runs 17 m to the left in5 s. (a) Is Albert’s speed…

A:

Q: The coefficient of kinetic friction between the 45-kg crate and the ground is μ = 0.3. The crate…

A:

Q: Consider the following descriptions of the vertical motion of an object subject only to the…

A: (a)Write the kinematic equation for final velocity

Q: Cynthia pulls horizontally on an old chest of drawers (m = 75.0 kg), sliding it across the floor.…

A: Given data:  Mass (m) = 75.0 kg Force applied (F) = 355 N Friction force (f) = 165 N Required:…

Q: A 2.3-kg fireworks shell is fired at an angle 19.5° from the vertical from a mortar and reaches a…

A: Part i: The maximum height h of a projectile with initial velocity u launched at an angle θ from the…

Q: Which of the following correctly applies to a projectile In the absence of friction? A.      The…

A:

Q: Figure below shows the data from a bathroom scale as a woman jumps straight up and then lands. Match…

A: The normal force measured by the bathroom scale is as shown in the graph . The force is plotted…

Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: