A bungee jumper falls for 1.3s before the bungee cord begins to stretch. Until the jumper has bounced back up to this height, the elastic cord causes the jumper to have an average acceleration upward of 4m/s2. a.How fast is the jumper going when the bungee cord begins to stretch? b.How far below the diving platform is the jumper at that moment? c.How long after the hunger cord begins to stretch does the jumper reach me low point of the drop? d.How far below the diving platform is the jumper at the instant the speed is zero?

Q: The graph shows vx vs. t for an object moving along the x-axis. Vx (m/s) 40 20 2 4 6 8 10 12 14 t(s)

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Q: 1. Suppose a particle is moving at a varying velocity along a straight line and that s = f(t)…

A: f(t)=at+b with a,b>0 then, v(t)=df(t)dt=a   Therefore, the average velocity of the particle…

Q: A motorist is about to enter the exit ramp of a highway. When it is 50 m before reaching A (along…

A: Given, Radius,r=100 m Retardation,a=-0.5 m/s2 Initial speed,u=80 km/h=22.22 m/s Distance from A,d=50…

Q: Q20. An object is shot straight up from 10 m above ground level with an initial velocity of vo = 17…

A: Given:The initial height of the object: h=10 mThe initial velocity is given as: v0=17 m/s in the…

Q: An astronaut, visiting a newly discovered planet, finds the acceleration due to gravity by dropping…

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Q: 1.A car travels in the north expressway with a constant velocity of 80kmhr for 10mins. what is the…

A: Given that:-Car velocity, v=80 km/hrand, time, t=10 min.=600 sec

Q: 2. A car starts from rest and accelerates to 8 m.s in 5 seconds. It maintains its speed for 2…

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Q: A student walks at a speed of 0.5 m/s and then begins to run 15 seconds later at a speed of 2.5 m/s.…

A: We know that-Equation of motion, v=u+ atafter rearranging can be written as- ⇒at= v-u⇒a=v-ut

Q: E7.A hiker covers a distance of 1.26 km in a time of 0.5 hours. What is the average speed of the…

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Q: An object moves along the x axis with an acceleration of –6 m/s2 . At an earlier time, the position…

A: given thatacceleration , a=-6 m/s2suppose that time is t,and velocity at t is v=10 m/sand position…

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A: Given, A motionless minecart, starting at rest can be evenly accelerated to v at anytime going…

Q: 1. A bicyclist pedals at a speed of 5.0 m/s. How far does he travel in 2000 seconds?

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Q: I toss a ball into the air.  At what point is the acceleration zero? A. Never B. No way to tell…

A: I toss a ball into the air. At what point is the acceleration zero?

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Q: In a car crash, large accelerations of the head can lead to severe injuries or even death. A driver…

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Q: 6. Freight trains can produce only relatively small accelerations. a. What is the final velocity of…

A: 6)time (t)= 7 min=420 seconds initial velocity (u) = 4.50 m/s Acceleration (a)= 0.0450 m/s2

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Q: A ball is rolled up a ramp with an initial velocity of +10m/s. It arrives at the bottom of the ramp…

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Q: Q9. A particle accelerates from rest with a constant acceleration of 15 m/s?. How long will the…

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Q: A certain hawk can fly horizontally (i.e., not diving) at a maximum speed of 80.0 km/hr The hawk…

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Q: A person jogs 4.0 km in 32 minutes, then 2.0 km in 22 minutes, and finally 1.0 km in 16 minutes.…

A: Given that-A person Jogs 4.0km in 32 minutesso, d1=4.0 kmt1= 32 minThe person jogs 2.0km in 22…

Q: A car is initially moving with a velocity of +6.0 m/s and travels for 8.0 s with the uniform…

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Q: The car moves in a straight line such that for a short time its velocity is defined by v = (2t^3 + 3…

A: Given value---  v = (2t^3 + 3 t) m/s. We have to find--- a. What is its position in meters when t…

Q: Driving down the road at a speed of 23.9 m/s, you suddenly notice a fallen tree blocking the road a…

A: Write the given values with the suitable variables. u=23.9 m/sv=0 m/sd1=82 md2=6.6 m Here, u, v, d1,…

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.