The driver of a car slams on the brakes when he sees a tree blocking the road. The car slows uniformly with acceleration of -5.00 m/s2 for 4.15 s, making straight skid marks 61.4 m long, all the way to the tree. With what speed does the car then strike the tree? =?m/s

Q: A turtle and a rabbit engage in a footrace over a distance of  4km. The rabbit runs  0.5km and then…

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Q: A snowboarder on a slope starts from rest and reaches a speed of 3.6 m/s after 5.8 s What is the…

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Q: The speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub you toe in…

A: given speed of nerve impulse (v)=100 m/s Distance it has to travel (d)=1.60 m Required Time…

Q: An object moving in one dimension accelerates from rest at a constant rate of a1=8 m/s2 for a time…

A: According to question we need to find--- Find the distance traveled by the object during the final…

Q: You attach a meter stick to an oak tree, such that the top of the meter stick is 2.67 meters above…

A: A meter stick is attached to the oak tree, such that its top is at a height of 2.67 m from the…

Q: A person is driving along a straight highway at a speed of 21.0 m/s when the traffic light which is…

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Q: On a straight highway, a car is moving initially at speed of 26.0 m/s. To pass another car, it…

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Q: A cat starts from rest and runs in a straight line according to x(t)=60+3t^2. Calculate the…

A: Position as a function of time is Find:(a) Displacement during the first (b) Velocity at (c)…

Q: A car travels at 30.0 m/s and sees a truck 100.0 m ahead of it that is traveling at 20.0 m/s. The…

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Q: A car and a truck start from rest at the same instant with the car initially at some distance behind…

A: Given data:  Acceleration of the truck (a) = 1.20 m/s2 Acceleration of the car (a) = 1.80 m/s2…

Q: The automobile is originally at rest, i.e., s (t = 0 s) = 0 m. If it then starts to increase its…

A: Write the expression for the acceleration and substitute the corresponding function for the…

Q: The driver of a car traveling on the highway suddenly slams on the brakes because of a slowdown in…

A: Given :               Speed = v1 = 75 mi/hmi/h                              v2 = 40 mi/hmi/h…

Q: Assume that an MX missile goes from rest to a suborbital velocity of 3.50 km/s in 60.0 s (the actual…

A: Given that the missile starts its motion from rest, so that the initial velocity is zero. The final…

Q: How long (in seconds) is the rock in the air, from the instant it is tossed until it hits the bottom…

A: Given data: The initial speed is: u = 20 m/s The final speed at maximum height is: v =0 The depth…

Q: An initially motionless test car is accelerated uniformly to 125 km/h in 7.83s before striking a…

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Q: A hare and a tortoise compete in a race over a straight course 1.00 km long. Thetortoise crawls at a…

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Q: A car accelerates from rest at a rate of 5.00 m/s2 and travels a distance D. The car then reverses…

A: Given data: Acceleration of the car, a=5.00 m/s2 Average speed of the car, v=20.0 m/s Initial speed…

Q: You are stuck on a two lane road behind a truck traveling 64.4 km/h (40 mph). You pull into the…

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Q: A swan on a lake gets airborne by flapping its wings and running on top of the water. a) If the swan…

A: Data we have velocity, v=6.96m/s acceleration, a=0.4m/s2 To find the distance, d=?

Q: The brakes are applied to a moving car, causing it to uniformly slow down. While slowing, it moves a…

A: Distance travelled (S) = 40.0 mFinal velocity (v) = 2.05 m/s Time (t) = 7.00 s

Q: An electron in a cathode ray tube of a TV set enters a region where it accelerates uniformly from a…

A: Given data: The initial speed of an electron is: u = 3.4×104 m/s The final speed of an electron is:…

Q: A car is speeding at a constant speed 32 m/s passes a still police car which immediately takes off…

A: The constant speed of the speeding car, vc = 32 m/s The constant acceleration of the police car, ap…

Q: Suppose a car merges into freeway traffic on a 200 - m - long ramp. If its initial velocity is Om /…

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Q: object is thrown into the air with initial velocity v = 5m/s. After being released it is only…

A: Initial velocity v = 5m/s. a = -9.81m/s2We need to find time taken in reaching maximum height.

Q: Two trucks are heading towards each other on opposite sides of a two-lane road. Truck A is moving…

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Q: A car and a jeep are 7 km apart. The car starts from rest and travels towards the jeep with an…

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Q: A ranger in a national park is driving at 22.0 mi/h when a deer jumps into the road 180 ft ahead of…

A: The initial velocity of a ranger is, u=22 mi/hr=9.835 m/s The final velocity of a ranger is, v=0 m/s…

Q: What was its initial speed (in m/s), just before the brakes were applied?   What was its…

A: Given data: The distance moved by car while slowing down is: s = 40 m The time taken to cover this…

Q: A car travels along a 1000 m path, starting from rest. For the first 300 m, it accelerates at 2.00…

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Q: During a slap shot, a hockey player accelerates the puck from a velocity of 7 m/s to 40 m/s in the…

A: Given: Initial velocity, u=7 m/s Final velocity, v=40 m/s  Time interval, t=3.33×10-2 s   To…

Q: One of the fastest known animals is the Indian spine-tailed swift. A swift flies 3.20 km due north…

A: It is given that, x=3.20 km=3.20×103 mt=32.8 s

Q: The displacement-time graph of a moving object is a straight line. Then a. its acceleration may be…

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Q: A toy rocket is traveling to the right at 15.0 m/s when it undergoes a constant acceleration of 3.00…

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Q: The brakes are applied to a moving car, causing it to uniformly slow down. While slowing, it moves a…

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Q: 8. GO An 18-year-old runner can complete a 10.0-km course with an average speed of 4.39 m/s. A…

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Q: A baseball is hit with a bat and, as a result, its direction is completely reversed and its final…

A: Given values: Contact time,∆t=0.60 s Magnitude of initial speed,vi=v Magnitude of final speed,vf=v2

Q: How long did the ball take to return to the juggler’s hand?

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Q: Wags decides to go on another adventure. He begins by traveling east for 100m. He then moves 75 m in…

A: Given data,  Distance travelled towards East = 100m Distance travelled towards west =75 m With…

Q: At a location where g=9.80 m/s2 , an object is thrown vertically down with an initial speed of 1.00…

A: Given data: Acceleration due to gravity (g) = 9.80 m/s2 Initial velocity (v0) = 1 m/s, vertically…

Q: A car starts from rest and accelerates uniformly at 4.0 m/s2 toward the east.  A second car starts…

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Q: A sprinter accelerates from rest to a top speed with an acceleration whose magnitude is 3.76 m/s 2.…

A: The solution of the above problem is given below

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.