A 105 kg guy runs at 3.25 m/s down the parking lot to catch a cart before it hits his car. The cart seems to gain speed as it rolls in the lot causing the guy to change his velocity to 4.5 m/s over a period of 0.77 seconds. What force did the guy use as he changed his velocity

Q: A body with mass of 20 g starts moving (90 km/h) on a horizontal rough surface. If it stops after…

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Q: A 48-lb suitcase slides 20 ft down the ramp. The suitcase has an initial velocity down the ramp of…

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Q: Packages having a mass of 6 kg slide down a smooth chute and land horizontally with a speed of 3 m/s…

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Q: A freight train is being assembled in a switching yard. Car 1 has a mass of m1 = 64x10^3 kg and…

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Q: If the 80 kg cyclist took 3.00 m horizontal distance to reach 5. 20 m elevation above the ground.…

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Q: if we hit a 0.25 kg ball traveling 15m/s leftwards towards the bat and then the ball travels 15m/s…

A: Assuming left side as negative X axis and right side as positive X axis. The velocity in left…

Q: A car of mass 900 kg is initially travelling at 55 km/h. If the speed increases so that its kinetic…

A: Given:- m=900 kg v1=55km/h=15.2778 m/s K1=175 kJ=175000 J To find:- Final speed, v2

Q: Q3. a) A tennis ball of mass 0.1 kg is struck by a racket head of mass 1.0 kg. The ball is…

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Q: Q3/ A hockey puck of mass 0.16 kg traveling on a smooth ice surface collides with the court’s edge.…

A: Mass of puck, m = 0.16 kg Initial velocity, vi = - 2 i m/s Final velocity, vf = 1 i m/s Contact…

Q: A block slides on a rough horizontal surface from point A to point B. A force (magnitude P= 2.0 N)…

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Q: A 10.0 kg mass sliding on a frictionless horizontal surface at 7 m/sec hits a spring that is…

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Q: A car of mass 900 kg is initially travelling at 55 km/h. If the speed increases so that its kinetic…

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Q: A spring, having an unstretched length of 1.0 m has one end attached to the 5-kg ball, as shown.…

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Q: Find the energy of the box shown in the figure after 3 seconds from applying the load 200 N, if it…

A: Given dataAplied force F = 200NAngle with respect ot horizontal θ = 300Coefficient of friction μk =…

Q: There is a 1.3 kg box moving along a horizontal frictionless floor with a velocity of 5.0 m/s. After…

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Q: 1000 kg car requires eight seconds to change its speed from 0 km/h to 140 km/h. What is the powered…

A: Given: m= 1000 Kg u= 0 km/h =0 m/s v= 140 km/h = 38.89 m/s

Q: A 300 g block is dropped onto a relaxed vertical spring with spring constant k = 250 N/m. The block…

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Q: upward in a plane inclined 30 ° from the horizontal, at a speed of 18 m / s. How fast will that mass…

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Q: A 50 N force is applied horizontally to a 10 kg block which is initially at rest (v = 0) what is the…

A: GIVEN DATA  MASS OF THE BLOCK =10kg FORCE = 50N DISTANCE =7m

Q: A 0.30-kg ball is dropped from a height of 3.0 m above the floor. It rebounds to a height of 2.0 m.…

A: Given Data The mass of the ball is: m=0.30 kg. The dropped height of the ball is: h1=3 m The…

Q: A 1.0-kg ball is thrown horizontally with a velocity of 15m/s against a wall. If the ball rebounds…

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Q: A 100kg crate is originally at rest and is subjected to two forces. Determine the distance(m) it…

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Q: 3. A 50,000 lb box car going 2.5 mi/h is to be hitched to a gondola carrying bulk copper ore (net…

A: Given: m1 = 50000 lb m2 = 100000 lb v1 = 2.5 mi/hr

Q: While a 0,024 kg bullet is moving in the horizontal direction shown below, it hits a 44 kg block,…

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Q: 5. A body of mass 10kg moving with a velocity of 1 m/s is acted upon by a force of 50N for two…

A: Given, Mass of the body = m = 10 kg Initial velocity of the body = u = 1 m/s Force acting on the…

Q: A trailer truck enters a 2 percent uphill grade traveling at 72 km/h and reaches a speed of 108 km/h…

A: Given data: Initial speed of trailer truck, v1 = 72 km/h. Final speed of trailer truck, v2 = 108…

Q: 200 kg block at rest is pulled by a 400 N force on a smooth surface. Determine the block’s velocity…

A: Find the velocity at t = 10 seconds.

Q: A 0.515-oz model rocket is launched vertically from rest at time t = 0 with a constant thrust of 0.9…

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Q: (2) Total force of 18 N is applied to 6 kg body. This force causes body to move from the state of…

A: Given, Force = F = 18 N Mass of the body = m = 6 kg Initial velocity = u = 0 m/s (As it starts from…

Q: A body with a mass of 5 kg moves along a curvilinear path. Over a path length of 20 m, the body…

A: To determine the work done by the force.

Q: The 40-kg boy in Fig. 14-13a slides down the smooth water slide. If he starts from rest at A,…

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Q: A particle travelling in a plane has an initial linear momentum of (8i + 8j) kgm/s and is acted upon…

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Q: A 2-kg car initially moving at 6 m/s at a height of 4 m encounters a hill of height 5 m, as shown in…

A: Given data  Mass of the car = 2 kg  Car moving with a velocity = 6 m/s It encounter a hill at a…

Q: A 2,900 lb passenger vehicle, with a front cross-sectional area of 45 ft', is traveling on a road…

A: W=Weight of Passenger Vehicle=2,900 lbR=Radius of Horizontal Curve=1300 ftρ=Density of Air=0.0766…

Q: 25km / h 1. A cyclist is competing in a race and is passing some competitors . The cyclist is…

A: Given          Power, P = 400 W Initial speed, u = 25 km /h                         = 6.94 m/s…

Q: In a particular crash test, a car of mass 1780 [kg] collides with a wall. The initial and final…

A: Vi = - 26 m/s                  (As per give sign    conventions) Vf = 2.7 m/s      (Note that to the…

Q: A 3590-lb car travels up the 7-percent incline shown. The car is subjected to a 45-lb aerodynamic…

A: Draw the free body diagram of the car.

Q: 2. If the 80 kg cyclist took 3.00 m horizontal distance to reach 5. 20 m elevation above the ground.…

A:

Q: Q3/ A hockey puck of mass 0.16 kg traveling on a smooth ice surface collides with the court's edge.…

A: Given: Mass of puck, m = 0.16 kg Initial velocity, vi = - 2 i m/s Final velocity, vf = 1 i m/s…

Q: (a) A 120-lb woman rides a 15-lb bicycle up a 3-percent slope at a constant speed of 5 ft/s. How…

A: a)              W=WB+WW=15+120=135 lbtanθ=3100θ=1.718° Power developed by the woman…

Q: Q/ 1000 kg car requires eight seconds to change its speed from 0 km/h to 140 km/h. What is the…

A:

Q: 3. A 50,000 lb box car going 2.5 mi/h is to be hitched to a gondola carrying bulk copper ore (net…

A: Write the given data. mc=50000 lbvci=2.5 mi/hmg=100000 lbvgi=0

Q: A heavy car A of mass 2000 kg travelling at 10 m/s has a head-on collision with a sports car B of…

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Q: A box with a mass of 25 kg is moving downward at 5 m/s. The motor pulls on the cable with a force of…

A: The mass of the body is given as 25 kgs and the same is equivalent to 250 Newtons of force in the…

Q: 10 kg block A rests on a smooth surface and the spring is compressed 0.1 m. It is attached to an…

A:

Conservation of Energy

In physics, the rule of the conservation of energy states that energy doesn’t disappear from the atmosphere; instead, it changes its form from one type to another. Energy is one of the most important physical quantities in nature, and it cannot be created or destroyed — only transformed.