A park ranger driving on a back country road suddenly sees a deer “frozen” in the headlights. The ranger, who is drivingat 11.4 m>s, immediately applies the brakes and slows with an acceleration of 3.80 m>s2. (a) If the deer is 20.0 m fromthe ranger’s vehicle when the brakes are applied, how close does the ranger come to hitting the deer? (b) How muchtime is needed for the ranger’s vehicle to stop?

Q: If the braking distance for your car at a certain speed is 200ft and, after reacting to a solution,…

A: Acceleration is,

Q: When you step onto a hot beach with your bare feet, a nerve impulse generated in your foot travels…

A: Let v denotes the average speed of the nerve impulse, d denotes the distance travelled by the nerve…

Q: If the speed of the lifeguard on sand is 4.00 m/s and she swims at 1.00 m/s, how much time will she…

A: AD=150 mBD=50+60=110 mFC=25 mBC=60 mEF=DC=50 mAE=150−25=125 m

Q: • A finch rides on the back of a Galapagos tortoise, which walksat the stately pace of 0.060 m>s.…

A:

Q: A soccer player kicks a rock horizontally off a cliff 40.0 m high into a pool of water. If the…

A: Given:- Height of the cliff is h=40.0 m. The player hears the sound of the splash after time t0=3.00…

Q: If the velocity, in feet per second, of a particle at time t, in seconds, is described by the…

A: Given value--- v(t)=9t3−27t+12 . We have to find--- acceleration when t = 4 sec ?

Q: One aeroplane travels due north at 300km/h while another travels due south at 300km/h. Are their…

A: Velocity is the rate of change of displacement of an object. It is a vector quantity having both…

Q: vertically up from the ground with an initial velocity of vo = 41.8 m/s. At what height from the…

A: Given, Height, H=89.0m to=0s τ=2.55s vo=41.8m/s

Q: A particle moves according to a law of motion s f(t), t2 0, where t is measured in seconds and s in…

A:

Q: Daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving up…

A:

Q: a certain handgun with a muzzle velocity of 325 m/s is fired straight up. neglecting air resistance,…

A: Initial velocity of bullet (u) = 325 m/sTo find : time taken by the bullet to fall back to the head…

Q: While driving a car at 90 km/h, how far do you move while your eyes shut for 0.50 s during a hard…

A:

Q: A 5 kg object is shot straight up with an initial velocity of 1 m/s from the ground. If air…

A:

Q: An unmarked police car traveling a constant 90 km/h is passed by a speeder. Precisely 1.00 s after…

A: Let up is the initial speed of the police car, us be the speed of the speeder, ap be the…

Q: When velocity and acceleration are both negative, then the speed of the particle is

A: when velocity and acceleration are both negative, they are same in sign.

Q: At the top of a cliff 110 m high, Raoul throws a rock upward with Veločity Tu How much later should…

A:

Q: An airplane decelerates at a constant rate of 4.63 m/s² when it land runway of an airport. For a…

A: Given:deacceleration, a = -4.63 m/s2time duration, t = 15.8 sdistance, s = 1378 m

Q: Daredevil is attempting to jump his motorcycle over a line of buses parked end to end by driving up…

A:

Q: A swimmer heading directly across a river 200 m wide reaches the opposite bank in 1 min 40 s. She is…

A: Given : Width of the river  d=200 m Time taken to reach at the other end of the river t=1 min 40…

Q: o of hikers is to travel x km by bus at an average speed of 48 km/h to an A group unknown…

A: distance traveled by bus = x Distance covered while walking = x Time for lunch and rest = 2 hours…

Q: Starting at a height of 8 m, and fired upwards at 11 m/s, how much time is projectile in the air…

A: Given - Displacement of the projectile, y =- 8 m Initial velocity , u = 11 m/s  Acceleration due to…

Q: car traveling with the initial speed of 30 m/s and traveling a distance 450 m with the final…

A: A car initial speed u = 30 m/s  The final speed of the car is v = 80 m/s  The distance travel by the…

Q: An aircraft has a lift-off speed of 12.1 km/h. If the aircraft's acceleration is constant, what…

A: The expression for the required time,

Q: A California Condor is approaching its nest with a large chunk of carrion in its beak. As it…

A:

Q: During a hard sneeze, your eyes might shut for 0.44 s. If you are driving a car at 75 km/h during…

A:

Q: To qualify for the finals in a racing event, a race car mustachieve an average speed of 250. km/h on…

A: Assume that, the total distance is S and velocity in the first half be v1, and second half is v2. So…

Q: An SUV designed to operate bet. Two stations 8 km apart. Maximum acceleration and deceleration are…

A: Given data The distance between the stations is d = 8 km = 8000 m The acceleration between the two…

Q: When a bullet is fired into a sand bank, its retardation is assumed equal to the square root of its…

A: -a=√vi given vi

Q: Landing with a speed of 71.4 m>s, and traveling due south, ajet comes to rest in 949 m. Assuming…

A: A jet travelling due south, comes to rest. Given,

Q: A soccer player kicks a rock horizontally off a 40.0-m high cliff into a pool of water. If the…

A: Solution: Given that yi = 40 m yf = 0 when he kicks it horizontally vyi=0 tsound=3 s vsound=343 m/s…

Q: If a ball is thrown Into the air with a velocity of 47 ft/s, its height (in feet) after t seconds is…

A: Given that -  y=47t-16t2 .....(1) Expression of velocity at time t is given by -  v=dydt .....(2)

Q: The minimum distance required to stop a car moving at 50 km/h is 20 m. What is the minimum stopping…

A:

Q: Under what condition is average velocity equal to the average of the object's initial and final…

A: If v,u,s and a are final velocity, initial velocity, displacement and constant acceleration of any…

Q: A bullet is fired straight up with a muzzle velocity of 460 m/s. How long will it take to reach its…

A: Given data:  Initial velocity (V0) = 460 m/s, upward Required:  Time taken to reach maximum height…

Q: TRAIN PROBLEMS S=D TYPE 9, T&D FORMULAI t A train (s 20dom long rins at 50m/s. Find t?

A: Given data :                        Distance    =   D                           Speed      =   S…

Q: The runway of an airport in Oman has been designed such that the lowest acceleration for a plane to…

A: Write the given values of the problem- Acceleration(a) a=14.3 ms2 speed(v) v=54.9 m/s u=0

Q: A Cessna aircraft has a lift-off speed of 135 km/h. What minimum constant acceleration does this…

A: Given data The lift speed of the aircraft is given as v = 135 km/h. The take-off run is given as s…

Q: A boat is cruising in a straight line at a constant speed of 2.5 m/s when it is shifted into…

A: given data,u=2.5 mss=14 mv=1.5 ms

Q: An experimental rocket car starting from rest reaches a speed of 560 km/h  after a straight 400-m…

A:

Q: ON A CERTAIN DESERT LAND, A HORSE IS RUNNING AT A SPEED OF 60 MPH. HOW FAR BACK OF A STOP WAGON…

A: Given that:- Speed of horse=60mph

Q: an apple fréély falls (no airdrag) from the branch of a tree and hit the ground in exactly 0.5…

A:

Q: In a scene in an action movie, a stuntman jumps from the top of one building to the top of another…

A:

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.