Dan picks up a 15-m-long pole and begins running very fast, holding the pole horizontally and pointing in the direction he’s running. He heads toward a barn that is 12 m long and has open doors at each end. Dan runs so fast that, to Farmer Brown standing by his barn, the ladder is only 5 m long. As soon as the pole is completely inside the barn, Farmer Brown closes both doors so that Dan and the pole are inside with both doors shut. Then, just before Dan reaches the far door, Farmer Brown opens both doors and Dan emerges, still moving at high speed. According to Dan, however, the barn is contracted to only 4 m and the pole has its full 15 m length. Farmer Brown sees the pole completely inside the barn with both doors closed. What does Dan see happening?

Q: Consider a ball whose position in 2 dimensions is described by the equation #(1) = (4"j + 11) t +…

A: Since you have posted a question with multiple subparts, we will solve the first three only as per…

Q: Far in space, where gravity is negligible, a 425 kg rocket traveling at 95 m/s fires its engines.…

A: Far in space, where gravity is negligible,Mass of rocket M =  425 kgVelocity of rocket =95 m/sAlso…

Q: An object's velocity graph is given by a straight line with an x-intercept =10 sec. and y-intercept…

A: Given data: The x-intercept on graph is x=10 s. The y-intercept on graph is y=1.5 m. The time…

Q: Velocity O 3 Time, s (1) st Velocity Velocity + Time (4) Time, s (2) Velocity + Velocity + Time, s…

A: Given, The displacement covered by a particle in the velocity-time graph is given by the area under…

Q: #3. A & B. how to work the problem out?

A:

Q: Spaceship Malfunction. You and your team get a distress call from another ship indicating that there…

A:

Q: PROBLEMS 11.1+ Speed addition. Darnell stands in a railroad coach that moves at speedc relative to…

A: We will answer this question using formula for adding relativistic velocities. The steps are as…

Q: Suppose the caravan of 10 cars begins immediately in front of the first toll booth, travels 20 km to…

A: To calculate the total end-to-end delay, we need to know the delay at each toll booth. If we assume…

Q: Starting from the same point, Reden starts walking eastward at 60 cm/s while Neil starts running…

A: Given:Reden start walking eastward at 60 cm/sNeil starts running toward south at 80 cm/sTo Find:How…

Q: The sketch below shows the position of a toy car that moves along a track while a fan is blowing and…

A: Position of toy car is as shown below.

Q: 1) A young urban warrior shoots an arrow from a kneeling position 3 feet off the ground. She shoots…

A: (a) The initial height (h0) of the arrow will be 3 feet from the ground. (b) Initial velocity (u) of…

Q: A red train traveling at 72 miles/hour (mph) and a green train traveling at 100 mph are headed…

A: Given information: The speed of the red train (Vr) = 72 mph we know that:1 mile = 1609 m1 mile/hr =…

Q: An object is released from rest by someone standing on a bridge. The object falls without hitting…

A: Time taken, t = 2.1 sInitial velocity, u = 0Acceleration due to gravity, g = 10 m/s²Final velocity,…

Q: Joey starts riding his scooter from his apartment to campus. He thinks it would be fun to make a…

A:

Q: E3 (3D) In a sci fi movie, an astronaut flies away from a space station doing backflips over and…

A: i)If we choose reference frame with the astronaut as the origin than the astronaut won't be rotating…

Q: A sprinter accelerates from rest at a uniform rate of 2.25m/sec^2 for 5.5sec to reach his maximum…

A:

Q: Suppose you're watching the deconstruction of a bridge. It's blown up and the sound of the explosion…

A: Write the given values with suitable variables. t=3 sv=344 m/s Here, t is the time and v is the…

Q: An object's velocity graph is given by a straight line with an x-intercept =9 sec. and y- intercept…

A: Given :x-intercept = 9 sy-intercept = 5 m

Q: billiard ball is rolling across a pool table toward the front of a train at 2.1m/s while the train…

A:

Q: х (m) 100F 80 D B C 40 20 t (s) 60 10 20 30 40 50 A, 60

A: The graph of distance travelled with time is linear till t = 10 s. Therefore the equation of the…

Q: A train is 350 meters long goes through a tunnel that is 2.52 kilometers long how long does the…

A: Given in question: Length of tunnel(L) = 2.52 Km = 2520 m                                 Length of…

Q: fro at tow Jos. the alw.

A: The displacement is calculated by taking the integral of velocity function , that is ,  Let the…

Q: Two cars are initially (2.50+C) km apart on a straight road. If the cars are moving toward each…

A: The initial distance be given as (2.50 +C), substituting the value of C on it,…

Q: In every 5 seconds, a drop of ink falls straight down onto the road coming from a moving vehicle.…

A: Given data: Total distance covered, d=600 m Total time taken, t=25 s

Q: 4 3 1 1 3 4 5 t (s) How far does the particle travel between t = 0 s and t = 6 s? It moves 6 meters…

A: The total area under the curve from 0 s to 6 s will give the displacement. The displacement traveled…

Q: An object's velocity graph is given by a straight line with an x-intercept =8 sec. and y-intercept…

A:

Q: You are sitting in your car at a red light when you see a zombie standing still 65m in front of your…

A:

Q: Tim and Rick both can run at speed , and walk at speed vw, with v. > vw. They set off together on a…

A: (A) Time taken by Rick = time for distance covered with speed Vr + time for distance covered with…

Q: 50 40 30- 20 10- -10 10 20 30 10 Danny is a lifeguard and spots a drowning child 30 meters along the…

A:

Q: Evan is just leaving his house to visit his grandmother. Normally, the trip takes him 25 minutes on…

A: Write the formula for the distance in terms of speed and time when the speed is constant.

Q: A biker is moving along a road at a uniform velocity of 5 m/s. A second biker is moving along the…

A: Given data:  Velocity of first biker (V1) = 5 m/s Velocity of second biker (V2) = 8 m/s Both are…

Q: 2. A mouse enters a basement room through a hole in one of the walls. It then travels through the…

A: The position of the mouse in X-Y plane is shown below

Q: A car moves as shown over three hours. Find the average velocity of the moving car in km/h

A: The graph shows different value of position at different time. Average velocity of car can be…

Q: If A = (6 m)i - (8 m) then 47 has magnitude: O 10 m O 56 m O 40 m 0-8 m 08m

A:

Q: Bob is a pitcher and knows that the fastest he can throw the ball is about ?0=34.1 m/s.v0=34.1 m/s.…

A:

Q: A red train traveling at 72 miles/hour (mph) and a green train traveling at 100 mph are headed…

A:

Q: A stone is thrown straight upward and it rises to a height of 3000cm. With what speed was it *…

A: a=g=Acceleration due to gravity=9.81 m/s2v=Final velocity=0u=Initial velocitys=Displacement=3000…

Q: A particle moves along the x-axis, its coordinate x = -6t + 5t* varies with time according to the…

A: The velocity of an object is the rate of change of its position with respect to time Hence, v =…

Q: You are sitting in your car at a red light when you see a zombie standing still 65m in front of your…

A: Given data:  Initial velocities of both persons is zero u1 = 0 and u2 = 0 a1 = 1.8 m/s2 and a2 = 0.6…

Q: A boat crossing a river travels north with a velocity of 10.0 kph relative to the water. The…

A:

Q: Archibald, an aging geezer, is out bicycling one fine afternoon, reliving his glorious youth and…

A: Consider the traffic police as the source of the sound, and it is stationary. Also, consider Archie…

Q: Consider an athlete running a 100-m race. How fast would she have to be running for her race to…

A: