When you normally drive the freeway between Sacramento and San Francisco at an average speed of 115 km/hrkm/hr (71 mi/hmi/h ), the trip takes 1.00 hrhr and 13 minmin . On a Friday afternoon, however, heavy traffic slows you down to an average of 105 km/hrkm/hr (65 mi/hmi/h ) for the same distance.     Part A How much longer does the trip take on Friday than on the other days?

Q: A car on Cass Ave. is proceeding north, towards Warren Ave., at the rate of 20 miles per hour. A…

A: Given: The speed of car, V = 20 mph The speed of truck, v = 30 mph The position of car, y = 0.4 m…

Q: A The velocity of the car is proportional to its displacement. B The driver is stepping on the…

A: Given,  be the distance covered by the car at time t.So,  denote the velocity and acceleration at…

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Q: N&5

A: Given that:The initial velocity of the driver : u =  35.4 m/sThe final velocity of the driver : v =…

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Q: Problem 2: Answer the following questions about path A in the figure. A city block is a square of I…

A: Length of each block ,l= 110m

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Q: You throw a small rock straight up from the edge of a highway bridge that crosses a river. The rock…

A: Given: The time taken for the rock to pass by you on its way down when thrown straight up: T = 4.00…

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Q: At highway speeds, a particular automobile is capable of an acceleration of about 2.0 m/s². Part A…

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Q: A motorboat traveling on a straight course slows uniformly from 65 km/hkm/h to 30 km/hkm/h in a…

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Q: A person walks up a stalled escalator 15 m long in 90 seconds. When standing on the same escalator…

A: 36s time would it take that person to walk up the moving escallator.

Q: At highway speeds, a particular automobile is capable of an acceleration of about 1.8 m/s

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Q: Part A The table shows test data for a corvette, one of the fastest cars made in the US. The car is…

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Q: An atom is constrained to move along the horizontal axis only. At time t = 0.0 s, the atom is at x =…

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Q: h x Part A A stone is thrown vertically upward with a speed of 21.0 m/s How fast is it moving when…

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Q: Asphere is fired downwards into a medium with an initial speed of 22 m/s. Part A If it experiences a…

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Q: Suppose a car is traveling at +17.9 m/s, and the driver sees a traffic light turn red. After 0.436 s…

A: Given data:  Initial velocity (u) = +17.9 m/s Reaction time (t0) = 0.436 s Acceleration (a) = -8.00…

Q: (d) At what time(s) does the object turn around, or change the direction in which it is moving (in…

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Q: q2 A galah (Eolophus roseicapilla) flies 1.1 km north and then 4.3 km west, in a total time of 75…

A: Given value--- first fly = 1.1 km , North. second fly = 4.3 km , west . We have to find---…

Q: Part A - Sophia is sitting in her car at a stoplight. When the light turns green, she accelerates at…

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Q: Suppose a car is traveling at +20.5 m/s, and the driver sees a traffic light turn red. After 0.593 s…

A: Initial velocity (u) = +20.5 m/s Reaction time(t0) = 0.593 s Acceleration (a) =-8.00 m/s2  Final…

Q: Vb 0- 1 2 3 6 8 TIme, s The Graph above shows the speed of a car traveling in a straight line as a…

A: Given:                       v  α  t            at t=0                u=0           at t=8…

Q: An airplane cruises at 900 km/h relative to the air. It is flying from Denver, Colorado, due west to…

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Q: The sport with the fastest moving ball is jai alai, where measured speeds can be 293 km/h. If a…

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Q: Starting at 48th Street, Dylan rides his bike due east on Meridian Road with the wind at his back.…

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Q: You are driving home from school steadily at 97 km/hkm/h for 160 kmkm. It then begins to rain and…

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Q: A hiker gets lost in a forest. He walks half-way around a circle with a radius of 2.1 km in 2.0…

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Q: Starting from rest, the motorboat travels around the circular path, p = 50 m, at a speed v = (0.8t)…

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Q: Q.The diagram below shows the speed-time graph for an object. E velocity (m/s) 30 25 20 15 10 B D 10…

A: The slope of the velocity versus time graph gives the acceleration of an object.

Q: Part A If a flea can jump straight up to a height of 0.370 m, what is its initial speed as it leaves…

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Q: Determine the time needed for the car to travel s = 45 m.

A: Given data: The initial speed is v0=20 m/s The displacement is s=45 m The acceleration is a=0.7s…

Q: image

A: A = 60 km/hr for 15 min, t = 15/60 = 0.25 hr B = 80 km/hr for 16 min, t' = 16/60 = 0.27 hr C = 45…

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.