In the figure below, a runaway truck with failed brakes is moving downgrade at 36 m/s just before the driver steers the truck up a frictionless emergency escape ramp with an inclination of theta = 15°. The truck’s mass is 1.5 x 104 kg. (a) What minimum length L of the ramp must the ramp have if the truck is to stop at the top of the ramp at height h? (b) Does the minimum length L increase, decrease, or remain the same if the truck’s mass is decreased? Why? (c) If its speed is decreased? Why? Hint: Use Energy Principles.

Q: A nonzero net force acts on an object. Is it possible for any of the following quantities to be…

A: (a) If a nonzero force acts on the object then an acceleration acting on the object according to the…

Q: A soccer ball with mass 0.420 kg is initially moving with speed 2.00 m/s. A soccer player kicks the…

A: Mass of the ball = 0.420 kg Initial speed = Vi = 2 m/s Final speed = Vf = 6 m/s Force applied = F =…

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A:

Q: Att = 0, force F (- 3.80i + 5.20j + 3.10k ) N begins to act on a 2.90 kg particle with an initial…

A: F→ = -3.80i^ + 5.20j^ + 3.10k^ N d→ = 1.80i^ + 2.10j^ + 6.90k^ m m = 2.90 kg vi = 3.60 m/s vf = ?

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A: Given, Mass of the particle =2.86 kg It is given that the particle starts from rest at x =0 A figure…

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A:

Q: moving the box, and have been moving it at 0.73 m/s. You back away, removing your applied force, and…

A: Given problem is based on the theory of friction. When two bodies slip over each other the force of…

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 128 km/h just before the…

A:

Q: A 60.0 kg skier with an initial speed of 15.5 m/s coasts up a 2.50 m high rise      Find her…

A: Given data: Mass (m) = 60 kg Initial speed (u) = 15.5 m/s Hight (h) = 2.5 m Need to determine the…

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A:

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 107 km/h just before the…

A: Given,

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A: GivenTotal mass (m) = 40 KgInitial velocity (U) = 5.8 m/sFinal velocity (V) = 0Force of friction (F)…

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A: solution as

Q: In a circus performance, a monkey is strapped to a sled and both are given an initial speed of 4.0…

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Q: A 5.0 N horizontal force is applied to a 2.5 kg cart for 3.8 m (starting with a speed of 0 m/s).…

A: given; horizontal force=5 N Mass = 2.5 kg initial speed is =0 m/s distance =3.8 m final velocity v

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A: Given: Mass of the skier is 60 kg. Height of the snow peak is 65 m. Co-efficient of kinetic friction…

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A:

Q: A projectile of mass 0.719 kg is shot straight up with an initial speed of 22.1 m/s. (a) How high…

A: Mass (m) = 0.719 kg Initial speed (u) = 22.1 ms

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A:

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A:

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A: In the given scenario, the floor where boxes are kept is frictionless. The mass doesn't matter since…

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A:

Q: 19.5 m B The height of the drop from point A to point B is h = 19.5 m, the velocity of the car and…

A: Using conservation of energy: mgh = 12mv2-u2  9.8 x 19.5 = 0.5 x(v2-6.252) v= 20.525 m/s

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Q: Questions 7.-10. refer to a 50.0-kg skater starting from rest on a parabola-shaped track at a height…

A:

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A:

Q: In the figure, a runaway truck with failed brakes is moving downgrade at 109 km/h just before the…

A:

Q: For a ballistic study, a 1.9 g mass bullet is fire into softwood. The bullet strikes the wood…

A: Given data:  Mass (m) = 1.9 g = 1.9 × 10-3 kg Initial velocity (V0) = 380 m/s Final velocity (v) = 0…

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A:

Q: A 2.0- kg box is moving at constant speed of 2.0m/s on a frictionless horizontal floor. You apply a…

A: Given Mass of a bix = 2.0 kg  box is moving at constant speed = 2.0m/s frictionless horizontal floor…

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A:

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Q: 3.00 kg 网

A: m1  = 3.kg m2  = 5 kg.

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A:

Q: 7. A skier whose mass is 70 kg, takes off from ski jump with a velocity of 50 m/s at an unknown…

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Q: A 2.0-kg block was released from rest at point A. It then moves through point B until it finally…

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Q: An Atwood’s machine is set up by suspending two blocks connected by a string of negligible mass over…

A: The acceleration (a) of the block of mass m = 3 kg be calculated as, F=maa=Fm=30 N-20 N3 kg +2 kg=10…

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Q: 20° 2.0 kg

A:

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A:

Q: A 60.0 kg skier with an initial speed of 13 m/s coasts up a 2.50 m high rise as shown in the figure.…

A: Write an expression using Newton’s second law of motion along the incline

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A: Given,Mass of the skier, m = 97.49 kginitial speed, vi = 34.93 m/sheight, H = 11.75 mslope of the…

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A:

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.