Lionel Messi scores a last second goal and, in celebration, runs as fast as he can, drops to his knees and slides along the wet grass of the field. Messi has been clocked (this is true) at a top speed of 9 meters per second in a game. Let's take this as his maximum velocity and the speed he is moving right before he drops down to slide.Take Messi's mass to be 72 kilograms, and take the coefficient of kinetic friction between skin and wet grass to be 0.4How far does Messi slide?

Q: of 10 the relation between the hiegt h and the square of the horizantal range D2 in projec…

A:

Q: A college student wants to toss a textbook to his roommate who is leaning out of a window directly…

A:

Q: A student stands at the edge of a cliff and throws a stone horizontally over the edge with a speed…

A:

Q: 78. In 1998, NASA launched Deep Space 1 (DS-1), a spacecraft that successfully flew by the asteroid…

A: Acceleration is the rate of change in velocity. Given,

Q: You are standing next to an old well. You want to know how far down the surface of the water is (you…

A:

Q: A large rock is dropped from rest from the edge of a cliff that is 20 m above the surface of the…

A: Given: Height from which rock is dropped  h=20 m Initial speed of rock is, u=0 Apply the kinematics…

Q: 2. SpaceX engineers is planning to build a 2-stage rocket which has a-t graph as shown. By their…

A: The acceleration up to 20 seconds is 22 m/s2 which is stage A and from 20 to 30 seconds the…

Q: V Three youths push a 40.0-kg block of ice so that it begins to coast on a frozen lake. With an…

A: mass of block of ice (m) = 40 kg Initial speed (u) = 3 ms

Q: Here we go again (yes, this set of questions is starting to feel like Groundhog Day). You AGAIN wake…

A: Height, h = 2.33 m Time, t = 0.276 s Intial velocity, u = 0 Acceleration, a = ?

Q: At what height above the ground does the apple go through the hoop?

A:

Q: Neglecting friction and air resistance, a car with an initial velocity of 76.5 km/h coasts up a hill…

A: given             initial velocity of car =vi= 76.5 km/h  = 21.25 m/s             final velocity of…

Q: In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then…

A: Given speed on initial part of the track Vi=9.2m/s Vf=120mm or 0.12m. And the angle of the slope =4°…

Q: The average intensity within the 3.4-mm radius circular spot illuminated by a helium-neon laser…

A: Given Data: Radius (r) = 3.4 mm = 3.4×10-3 m.Average intensity (I) = 53.5 W/m2. To Determine: (a).…

Q: As a technical engineer in the army, you are part of a team in charge of testing and commissioning a…

A:

Q: If you were to drop the ball from a height of 210 cm, how high would it bounce? How high would the…

A: When a ball is dropped and bounces, its behavior is influenced by the principles of energy…

Q: In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then…

A:

Q: When we estimate distances from velocity data, it is sometimes necessary to use times t0, t1, t2,…

A:

Q: A space shuttle lands on a distant planet where the gravitational acceleration is 2.0 ( We do not…

A:

Q: 2. A particle moves along x-axis under the force proportional to the difference V (t)-V". If V"=5 m/…

A: Given data: The initial velocity is V0=10 m/s. The velocity after t=1 sec is V=25 m/s.

Q: 18. Prove these statements: (a) (5 marks) As long as you can neglect the effects of the air, if you…

A: We are Required to prove the given statements related to kinematics.

Q: You can perform a popular trick by dropping any peso bill (Ex. 500 peso bill )lengthwise through the…

A: Motion perpendicular are independent of each other. Motion can be uniform or accelerated. Motion is…

Q: twelve story building and look over the edge to the reflecting pool 170 feet below. You drop your…

A: We know that the third equation of motion is given as  v2= u2+2as here v is the final velocity, u is…

Q: True or False? Consider carts colliding on a straight level track. It is impossible for two…

A: Required : True or False.

Q: Alice and Tom dive from an overhang into the lake below. Tom simply drops straight down from the…

A:

Q: The model for this set of velocity data is given by:  v(t) = [(1100/3)e^(-0.03t)] - (462/5) Use…

A: Given, Velocity  v(t)=11003e-(0.03t)-4625

Q: In his 1865 science fiction novel From the Earth to the Moon, Jules Verne described how three…

A: Since, you have uploaded a question with multiple sub-parts, we will solve the first three sub-parts…

Q: ball of mass 0.3 kg, initially at rest, is kicked directly toward a fence from a point 20 m away, as…

A:

Q: An attacker at the base of a castle wall 4 m high throws a rock straight up with speed 7.5 m/s from…

A:

Q: A 1500 kg automobile travels at a speed of 105 km/h along a straight concrete highway. Faced with an…

A: Given : Mass of car, m = 1500 kg             Initial velocity of car, u = 105 km/hr = 105000/3600…

Q: I was standing on the side of a 10-m foot bridge, holding a ball while watching a car approaching…

A: Given;- Height of the footbridge h= 10 m  When the car was 15 meters away from the footbridge the…

Q: Here we go again (yes, this set of questions is starting to feel like Groundhog Day). You AGAIN wake…

A: Height, h = 2.48 m Time, t = 0.284 s Initial velocity, u = 0 Acceleration, a = ?

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: