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- D = (oxt) + (1/2 * 8.93* (4.7)2) I D = 98.63 meter 5. You are about to skateboard down a long hill. Your initial velocity is 2.0 m/s south. When you reach the bottom of the hill you are travelling 6.0 m/s south. It took you 57 seconds to reach the bottom of the hill. What was your displacement?A ball dropped from a height of 30 cm, takes 0.6067 s to reach the ground. What is the acceleration due to gravity (g) at that place in S.I. units ? Select one: a. 0.988 b. 9.8 С. 163 O d. 1.63Supplementary Problems 3.1. A ship steams at a constant velocity of 30 kmh. (a) How far does it travel in a day? (b) How long does it take to travel 500 km? 3.2. A car moves at 50 kmh for h and then at 60 kmh for 2 h. (a) How far did it go? (b) What was its average velocity for the entire trip? 33. A woman jogs halfway home at 8 kmh and walks the rest of the way at 6 km/h. Find her average velocity for the entire trip. 34. An airplane whose airspeed is 500 km/h covers a distance of 1000 km in 24 h. How strong was the headwind against it? 3.5. Aboat moving downstream (with the current) in a river takes 4 min 7 s to cover a measured mile according to marks on shore, and 7 min 30 s to cover the same distance moving upstream (against the current). If the boat's velocity relative to the water is 11 mih, what is the velocity of the current in the river? 3.6. How long does it take an echo to return to a woman standing 300 m from a cliff? The velocity of sound in air is about 343 m/s. 3.7. A…
- Let's say you ride your bike from your house to your friend's house. To get there uou have to go 4.00 miles south, 8.00 miles west, then 6.00 miles north. This trip takes 32.5 minutes.a. What is your average speed for the trip in miles per minute? b. What is your average velocity for the trip in miles per minute?1. 1. The space shuttle travels at a speed of about 7.6 x 10³ m/s. The blink of an astronaut's eye lasts about 110 ms. How many football fields (length = 91.4 m) does the shuttle cover in the blink of an eye?Please answer the following question(s): 1. The speed of a boat in still water is vá. A river flows with a speed of v₁. The boat travels distance of 19 miles downstream in a river in 1 hour. However, the return journey takes 2 hours. Calculate the vand v₁. Hint: Velocity=displacement/time. Displacement can be positive of neagtive depending on the direction. You will first need to set up the equations by taking into account the resultant velocity of the boat in flowing water. Consider the direction the river is flowing to be positive. Set up two equations, one for the downstream journey and one for the upstream journey, in terms of "v" and "v": Do v" and "v, add or substract downstream to give the resultant downstream velocity? Do v" and "v, add or substract upstream togive the resultant upstream velocity? Use the upstream direction as negative. The resultant upstream velocity should be negative. vb vb Downstream positive Vr Upstream negative Vr
- A runner travels 50 m over a duration of 12.6 s. She took 29 steps over the 50 m. What was her average step rate in steps/s? Report to two decimal points (e.g. 1.23). You are allowed a margin of error of +/- 0.02.The velocity-time graph that describes the velocity of an object with time is given as in the figure below. if the values of a= 98.5, b=124.6 and c=57, Find the displacement made by the object in the first hour. v(km/h) b. a t(h) 0.5 1.0 1.5 2.0 Select one: A. 118.1 OB. 175.1 OC 398.4 OD. 139.6 OE 142.7 choiceA driver needs to make a delivery to an office that is 30 km away. The driver has traveled for 45 minutes west down a straight road at 50 km/h. a. Has the driver traveled far enough to reach the office? Support your response. b. Assume the driver has gone far enough and is traveling on the correct road. If he has not yet seen the business, what should he do to make the delivery? Explain your reasoning. Plzzz help
- I took 2.28km and converted it to 2280 meters then divided by 3200 and ended up with .71m/s but it keeps saying that its incorrect. Im not sure where I keep messing up. John walks 1.80 kmkm north, then turns right and walks 1.40 kmkm east. His speed is 1.60 m/sm/sduring the entire stroll. What is the magnitude of his displacement, from beginning to end? (2.28) If Jane starts at the same time and place as John, but walks in a straight line to the endpoint of John's stroll, at what speed should she walk if she wants to arrive at the endpoint just when John does?You drive your car from home to school at an average speed of 60 kph East for 1 hr and then continue 80 kph North for 1.5 hrs. 1. What is your average speed for the entire trip?1.7. A car accelerates from rest to a speed of 40 km/h in a distance of 50 m and then continues at constant speed. Using a velocity-time graph, or otherwise, calculate how long it takes to catch up with the car on a motorcycle starting from rest 2.0 min later than the car and reaching twice the speed with twice the acceleration.